Header

Full definition of header

(plural headers)

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 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 stretcherThis wall has four header courses.
a horizontal structural or finish piece over an opening
a machine that cuts the heads off of grain etcThey fed the bale into the header.
(soccer) the act of hitting the ball with the headHis header for the goal followed a perfect corner kick.

2011, October 1, Phil Dawkes, Sunderland 2 - 2 West Brom, 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 contentsThe 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 descriptorsThe 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.