(1) In data management, a made-up name that is assigned to a file, field or other data structure.

(2) In a spreadsheet, any descriptive text that is entered into a cell as a page, column or row heading.

(3) In programming, a made-up name used to identify a variable or a subroutine.

(4) In computer operations, a self-sticking form attached to the outside of a disk or tape in order to identify it.

(5) In magnetic tape files, a record used for identification at the beginning or end of the file.