The upper portion of a page (or other) layout. / Text, or other visual information, used to mark off a quantity of text, often titling or summarizing it.

(sports, transitive) To strike (a ball) with one's head.

plural of header

(computing) Provided with a header.

present participle of header

plural of header guard

(possibly dated) A native or resident of Gay Head (now Aquinnah), a town on Martha's Vineyard with a significant Wampanoag population.

Four sporting events, one after the other, at a single venue. / Four sporting events, one after the other, broadcast on the same television channel.

(soccer) A ball struck near ground level by the head of a diving player.

(programming) A file, usually in the form of source code, that is automatically included in another source file by the compiler. / (programming) A file that contains declarations but no implementations.