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Valve vs Knob - What's the difference?

valve | knob | Related terms |

As nouns the difference between valve and knob

is that valve is a device that controls the flow of a gas or fluid through a pipe while knob is a rounded protuberance, handle, or control switch.

As verbs the difference between valve and knob

is that valve is to control (flow) by means of a valve while knob is to have sex with.

valve

English

(wikipedia valve)

Noun

(en noun)
  • A device that controls the flow of a gas or fluid through a pipe.
  • A device that admits fuel and air into the cylinder of an internal combustion engine, or one that allows combustion gases to exit.
  • (anatomy) One or more membranous partitions, flaps, or folds, which permit the passage of the contents of a vessel or cavity in one direction, but stop or retard the flow in the opposite direction; as, the ileocolic, mitral, and semilunar valves.
  • (British) A vacuum tube.
  • (botany) One of the pieces into which certain fruits naturally separate when they dehisce.
  • (botany) A small portion of certain anthers, which opens like a trapdoor to allow the pollen to escape, as in the barberry.
  • (biology) One of the pieces or divisions of bivalve or multivalve shells.
  • (biology) One of the two similar portions of the shell of a diatom.

    • Derived terms

    * exhaust valve * heart valve * vein valve * ileocecal valve * intake valve * non-return valve: see: non-return * safety valve * toggle valve * valved * valveless * valve oil * valvoplasty

    Verb

    (valv)
  • To control (flow) by means of a valve.
    • ----

    knob

    English

    Noun

    (en noun)
  • A rounded protuberance, handle, or control switch.
  • (geography) A prominent rounded hill.
  • A rounded ornament on the hilt of an edged weapon; a pommel.
  • A prominent, rounded bump along a mountain ridge.
  • (plural) breasts.
  • (British, NZ, slang) A penis.
  • (slang, pejorative) A contemptible person.
  • (cooking) A dollop, an amount just larger than a spoonful (usually referring to butter)

    • Synonyms

    * See also

    Derived terms

    * doorknob * knob-and-tube

    Verb

  • (British, slang, vulgar, of a man) To have sex with.

    • Anagrams

    * ----