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Head vs Underhead - What's the difference?

head | underhead |

In engineering terms the difference between head and underhead

is that head is the end cap of a cylindrically-shaped pressure vessel while underhead is beneath the head of a mechanical component.

In obsolete terms the difference between head and underhead

is that head is to behead; to decapitate while underhead is a blockhead, or stupid person; a dunderhead.

As nouns the difference between head and underhead

is that head is the part of the body of an animal or human which contains the brain, mouth, and main sense organs while underhead is a blockhead, or stupid person; a dunderhead.

As adjectives the difference between head and underhead

is that head is of, relating to, or intended for the head while underhead is beneath the head of a mechanical component.

As a verb head

is to be in command of. (See also {{term|head up|lang=en}}..

As a proper noun Head

is {{surname|from=Middle English}}, from residence near a hilltop or the head of a river, or a byname for someone with an odd-looking head.

head

English

Alternative forms

* heed (obsolete), hed (obsolete)

Noun

{{ picdic , image=Human head and brain diagram.svg , width=310 , labels= , detail1=Click on labels in the image , detail2= }} (wikipedia head)
  • (label) The part of the body of an animal or human which contains the brain, mouth and main sense organs.
  • * , chapter=8
  • , title=[http://openlibrary.org/works/OL5535161W Mr. Pratt's Patients] , passage=Afore we got to the shanty Colonel Applegate stuck his head out of the door. His temper had been getting raggeder all the time, and the sousing he got when he fell overboard had just about ripped what was left of it to ravellings.}}
  • # (label) To do with heads.
  • ## Mental or emotional aptitude or skill.
  • #
  • #
  • ## Mind; one's own thoughts.
  • #
  • ##* {{quote-book, year=1935, author=[https://www.goodreads.com/author/show/288354.George_Goodchild George Goodchild]
  • , title=Death on the Centre Court, chapter=1 , passage=“Anthea hasn't a notion in her head but to vamp a lot of silly mugwumps. She's set her heart on that tennis bloke
  • ## A headache; especially one resulting from intoxication.
  • ##* 1888 , (Rudyard Kipling), ‘Thrown Away’, Plain Tales from the Hills , Folio Society 2005 edition, page 18,
  • #
    he took them seriously, too, just as seriously as he took the ‘head ’ that followed after drink.
  • ## A headdress; a covering for the head.
  • #
  • ## An individual person.
  • #
  • # (label) To do with heads.
  • ## A single animal.
  • #
  • #
  • #
  • #
  • #
  • ## The population of game.
  • #
  • ## The antlers of a deer.
  • (label) The topmost, foremost, or leading part.
  • * , chapter=10
  • , title=[http://openlibrary.org/works/OL5535161W Mr. Pratt's Patients] , passage=Men that I knew around Wapatomac didn't wear high, shiny plug hats, nor yeller spring overcoats, nor carry canes with ivory heads as big as a catboat's anchor, as you might say.}}
  • # The end of a table.
  • ## The end of a rectangular table furthest from the entrance; traditionally considered a seat of honor.
  • #
  • ## (label) The end of a pool table opposite the end where the balls have been racked.
  • # (label) The principal operative part of a machine or tool.
  • ## The end of a hammer, axe, golf club or similar implement used for striking other objects.
  • ## The end of a nail, screw, bolt or similar fastener which is opposite the point; usually blunt and relatively wide.
  • #
  • ## The sharp end of an arrow, spear or pointer.
  • #
  • ## (label) The top part of a lacrosse stick that holds the ball.
  • ## (label) A drum head, the membrane which is hit to produce sound.
  • #
  • ## A machine element which reads or writes electromagnetic signals to or from a storage medium.
  • #
  • ## (label) The part of a disk drive responsible for reading and writing data.
  • ## (label) The cylinder head, a platform above the cylinders in an internal combustion engine, containing the valves and spark plugs.
  • # The foam that forms on top of beer or other carbonated beverages.
  • # (label) The end cap of a cylindrically-shaped pressure vessel.
  • # Deposits near the top of a geological succession.
  • # (label) The end of an abscess where pus collects.
  • # (label) The headstock of a guitar.
  • # (label) A leading component.
  • ## The top edge of a sail.
  • ## The bow of a vessel.
  • # (label) A headland.
  • A leader or expert.
  • # The place of honour, or of command; the most important or foremost position; the front.
  • #* (Joseph Addison) (1672-1719)
  • an army of fourscore thousand troops, with the duke Marlborough at the head of them
  • # Leader; chief; mastermind.
  • #* , chapter=7
  • , title=[http://openlibrary.org/works/OL5535161W Mr. Pratt's Patients] , passage=“I don't know how you and the ‘head ,’ as you call him, will get on, but I do know that if you call my duds a ‘livery’ again there'll be trouble. It's bad enough to go around togged out like a life saver on a drill day, but I can stand that 'cause I'm paid for it. What I won't stand is to have them togs called a livery.
  • # A headmaster or headmistress.
  • # A person with an extensive knowledge of hip hop.
  • A significant or important part.
  • # A beginning or end, a protuberance.
  • ## The source of a river; the end of a lake where a river flows into it.
  • #
  • ## A clump of seeds, leaves or flowers; a capitulum.
  • #
  • ##* {{quote-magazine, year=2013, month=May-June, author=[http://www.americanscientist.org/authors/detail/david-van-tassel David Van Tassel], [http://www.americanscientist.org/authors/detail/lee-dehaan Lee DeHaan]
  • , title=[http://www.americanscientist.org/issues/feature/2013/3/wild-plants-to-the-rescue Wild Plants to the Rescue] , volume=101, issue=3, magazine=(American Scientist) , passage=Plant breeding is always a numbers game.
  • ### An ear of wheat, barley, or other small cereal.
  • ## (label) The rounded part of a bone fitting into a depression in another bone to form a ball-and-socket joint.
  • ## (label) The toilet of a ship.
  • #
  • ## (label) Tiles laid at the eaves of a house.
  • #
    (Knight)
  • # A component.
  • ## (label) The principal melody or theme of a piece.
  • ## (linguistics) A morpheme that determines the category of a compound or the word that determines the syntactic type of the phrase of which it is a member.
  • Headway; progress.
  • Topic; subject.
  • (label) Denouement; crisis.
  • * (William Shakespeare) (1564-1616)
  • Ere foul sin, gathering head , shall break into corruption.
  • * (Joseph Addison) (1672-1719)
  • The indisposition which has long hung upon me, is at last grown to such a head , that it must quickly make an end of me or of itself.
  • (label) Pressure and energy.
  • # A buildup of fluid pressure, often quantified as pressure head.
  • # The difference in elevation between two points in a column of fluid, and the resulting pressure of the fluid at the lower point.
  • # More generally, energy in a mass of fluid divided by its weight.
  • (slang, uncountable) Fellatio or cunnilingus; oral sex.
  • (slang) The glans penis.
  • (slang, countable) A heavy or habitual user of illicit drugs.
  • * 1936 , Lee Duncan, Over The Wall , Dutton
  • Then I saw the more advanced narcotic addicts, who shot unbelievable doses of powerful heroin in the main line – the vein of their arms; the hysien users; chloroform sniffers, who belonged to the riff-raff element of the dope chippeys, who mingled freely with others of their kind; canned heat stiffs, paragoric hounds, laudanum fiends, and last but not least, the veronal heads .
  • *
  • * 2005 , Martin Torgoff, Can't Find My Way Home , Simon & Schuster, page 177,
  • The hutch now looks like a “Turkish bath,” and the heads have their arms around one another, passing the pipe and snapping their fingers as they sing Smokey Robinson's “Tracks of My Tears” into the night.
  • (label) Power; armed force.
  • * (William Shakespeare) (1564-1616)
  • My lord, my lord, the French have gathered head .
    (Jonathan Swift)

    See also

    Image:Human head and brain diagram.svg, The human head . Image:Milk thistle flowerhead.jpg, A flower head . Image:Ikeya-zhang-comet-by-rhemann.png, Head of a comet. Image:MUO GTMO 2003.png, Head of the line. Image:Arrow and spear heads - from-DC1.jpg, Arrow and spear heads . Image:Head of a hammer.jpg, Head of a hammer. Image:Meetpunt.jpg, Head of a metal spike. Image:Hip_replacement_Image_3684-PH.jpg, Head of the hip bone. Image:MV Doulos in Keelung-2.jpg, Head of a ship. Image:Mainsail-edges.png, Head of a sail. Image:Diffuser Head.jpg, Head of a pressurized cylinder. Image:Malossi 70cc Morini cylinder head.jpg, Head of a two-stroke engine. Image:Hydraulic head.PNG, Hydraulic head between two points. Image:Floppy disk drive read-write head.jpg, A read-write head . Image:Fender Telecaster Head.jpg, Head of a guitar. Image:Drumhead.jpg, Head of a drum.

    Synonyms

    * (part of the body) caput; (slang) noggin, (slang) loaf, (slang) nut, (slang) noodle, (slang) bonce * (mental aptitude or talent) mind * (mental or emotional control) composure, poise * (topmost part of anything) top * (leader) boss, chief, leader * (sense) headmaster (m), headmistress (f), principal (US) * (toilet of a ship) lavatory, toilet * (top of a sail) * (foam on carbonated beverages) * (fellatio) blowjob, blow job, fellatio, oral sex * (end of tool used for striking) * (blunt end of fastener) * See also

    Antonyms

    * (topmost part of anything) base, bottom, underside * (leader) subordinate, underling * (blunt end of fastener) point, sharp end, tip

    Usage notes

    * To give something its head is to allow it to run freely. This is used for horses, and, sometimes, figuratively for vehicles.

    Derived terms

    * -head * bed head * big head, bighead * by a head * cool head * crackhead, crack head * crosshead * deadhead * deaths-head * death’s-head * dickhead * do someone's head in * drum head * dunderhead * get one's head around * give head * go to someone's head * hard head * have a head for * have one's head read * head and shoulders * headache * headbang * head bang * headbanger * headboard * headbutt * headcarry * headcase * head case * head cold * headcount * * headdress * header * headfirst * headgear * headhunt * heading * headlight * headless * headlock * headlong * headly * head up * heads up * head off * head over heels * headphone * headpiece * headquarter * headquarters * headrest * headroom * heads * headshunt * headscarf * headstand * headstart * headstone * headstrong * heads will roll * head to head * head to wind * head trip * headwear * headwind * hit the head * hold one’s head high * hophead * keep one’s head * keep one's head above water * keep one's head below the parapet * level-headed * lose one's head * lose one's head if it wasn't attached * overhead * pinhead * pisshead * print head * rail head * redhead * shake one's head * showerhead * snap someone's head off * strawhead * turk’s head * turn heads * turn someone's head * you can't put an old head on young shoulders

    Adjective

    (-)
  • Of, relating to, or intended for the head.
  • Foremost in rank or importance.
  • * , chapter=19
  • , title=[http://openlibrary.org/works/OL1097634W The Mirror and the Lamp] , passage=At the far end of the houses the head gardener stood waiting for his mistress, and he gave her strips of bass to tie up her nosegay. This she did slowly and laboriously, with knuckly old fingers that shook.}}
  • Placed at the top or the front.
  • Coming from in front.
  • Synonyms

    * (foremost in rank or importance) chief, principal * (placed at the top or the front) first, top

    Antonyms

    * (coming from in front) tail

    Verb

    (en verb)
  • To be in command of. (See also head up.)
  • Who heads the board of trustees?
    to head an army, an expedition, or a riot
  • To strike with the head; as in soccer, to head the ball
  • To move in a specified direction.
  • We are going to head up''' North for our holiday. We will '''head off''' tomorrow. Next holiday we will '''head out''' West, or '''head to''' Chicago. Right now I need to '''head into town to do some shopping.
    I'm fed up working for a boss. I'm going to head out on my own, set up my own business.
    How does the ship head ?
  • (fishing) To remove the head from a fish.
  • The salmon are first headed and then scaled.
  • To originate; to spring; to have its course, as a river.
  • * Adair
  • A broad river, that heads in the great Blue Ridge.
  • To form a head.
  • This kind of cabbage heads early.
  • *
  • To form a head to; to fit or furnish with a head.
  • to head a nail
    (Spenser)
  • To cut off the top of; to lop off.
  • to head trees
  • (obsolete) To behead; to decapitate.
  • (Shakespeare)
  • To go in front of; to get in the front of, so as to hinder or stop; to oppose; hence, to check or restrain.
  • to head''' a drove of cattle; to '''head''' a person; the wind '''heads a ship
  • To set on the head.
  • to head a cask

    Derived terms

    * head for the hills

    Statistics

    *

    Anagrams

    * (l), (l) 1000 English basic words ----

    underhead

    English

    Noun

    (en noun)
  • (obsolete) A blockhead, or stupid person; a dunderhead.
  • Adjective

    (-)
  • (engineering) Beneath the head of a mechanical component.
  • (Webster 1913)