hdr

Noun

header (plural headers)

1. 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.
2. 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.

   Synonyms:

   head, heading

3. 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".
4. (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.
5. 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.
6. the first part of a packet or stream, often containing its address and descriptors.
   • The encapsulation layer adds an eight-byte header and a two-byte trailer to each packet.

See all 18 meanings of header