1a small flap or strip of material attached to or projecting from something, used to hold, fasten, or manipulate it, or for identification and information. Military
, British a marking on the collar distinguishing an officer of high rank or (formerly) a staff officer.
2 Computing a second or further document or page that can be opened on a spreadsheet or web browser. 3 informal
, chiefly North American a restaurant bill: the waiter brought three drinks and a new tab
a tally of items ordered in a bar or restaurant:Bobby had told the barman to put everything on the tab 5 Aeronautics a part of a control surface, typically hinged, that modifies the action or response of the surface.
6Northern English informal a cigarette.
mark or identify with a projecting piece of material:he opened the book at a page tabbed by a cloth bookmark
chiefly North American identify as being of a specified type or suitable for a specified position:he was tabbed by the President as the next Republican National Committee chairman