Noun

(en noun)

Any person that s or directs.

* {{quote-magazine, date=2012-01

, author=Philip E. Mirowski , title=Harms to Health from the Pursuit of Profits , volume=100, issue=1, page=87 , magazine= citation , passage=In an era when political leaders promise deliverance from decline through America’s purported preeminence in scientific research, the news that science is in deep trouble in the United States has been as unwelcome as a diagnosis of leukemia following the loss of health insurance.}}

# One who goes first.

Follow the leader .

# One having authority to direct.

We elected her team leader .

# One who leads a political party or group of elected party members; sometimes used in titles.

# A person or organization that leads in a certain field in terms of excellence, success, etc.

The company is the leader in home remodeling in the county.

# (music) A performer who leads a band, choir, or a section of an orchestra.

# (music, UK) The first violin in a symphony orchestra; the concertmaster.

An animal that leads.

# The dominant animal in a pack of animals, such as wolves or lions.

#*

# An animal placed in advance of others, especially on a team of horse, oxen, or dogs.

#*

Something that leads or conducts.

# (botany) A fast-growing terminal shoot of a woody plant.

#*

# A pipe for conducting rain water from a roof to a cistern or to the ground.

# (UK) The first, or the principal, editorial article in a newspaper; a leading or main editorial article; a lead story.

# (fishing) A section of line between the main fishing line and the snell of a hook, intended to be more resistant to bites and harder for a fish to detect than the main fishing line.

# A piece of material at the beginning or end of a to allow the material to the threaded or fed onto something, as a reel of film onto a projector or a roll of paper onto a rotary printing press.

# (marketing) A loss leader or a popular product sold at a normal price.

# (printing) A type having a dot or short row of dots upon its face.

# (printing, in the plural) A row of dots, periods, or hyphens, used in tables of contents, etc., to lead the eye across a space to the right word or number.

# (fishing) A net for leading fish into a pound, weir, etc.

#*

# (mining) A branch or small vein, not important in itself, but indicating the proximity of a better one.

# (nautical) A block of hard wood pierced with suitable holes for leading ropes in their proper places.

# (engineering) The drive wheel in any kind of machinery.

Noun

(en noun)

The upper portion of a page (or other) layout.

If you reduce the header of this document, the body will fit onto a single page.

Text, or other visual information, used to mark off a quantity of text, often titling]] or [[summarize, summarizing it.

Your header is too long; "Local Cannibals" will suffice.

Text, or other visual information, that goes at the top of a column of information in a table.

That column should have the header "payment status".

(informal) A font, text style, or typesetting used for any of the above.

Parts of speech belong in a level-three header . Level-two headers are reserved for the name of the language.

a brick that is laid sideways at the top of a wall or within the brickwork with the short side showing; compare stretcher

This wall has four header courses.

a horizontal structural or finish piece over an opening

a machine that cuts the heads off of grain etc

They fed the bale into the header .

(soccer) the act of hitting the ball with the head

His header for the goal followed a perfect corner kick.

*{{quote-news

, year=2011 , date=October 1 , author=Phil Dawkes , title=Sunderland 2 - 2 West Brom , work=BBC Sport citation , page= , passage=The Black Cats had a mountain to climb after James Morrison's header and Shane Long's neat side-foot finish gave Albion a 2-0 lead five minutes in.}}

a headlong fall or jump

''The clown tripped over the other clown and took a header .

(computing) the first part of a file or record that describes its contents

The header includes an index, an identifier, and a pointer to the next entry.

(networking) the first part of a packet, often containing its address and descriptors

The encapsulation layer adds an eight-byte header and a two-byte trailer to each packet.

A raised tank that supplies water at constant pressure, especially to a central heating and hot water system

A pipe which connects several smaller pipes.

Common practice is to use plastic pipes with iron headers .