tabtab /tæb/ noun [countableC]1a small piece of paper or cloth that is fixed to the edge of something, usually giving information about it 2a bill for something, especially one that has gradually increased over timeOne out of three credit card holders pays their credit card tab in full every month.
the estimated government tab for resolving the S&L crisis
3a system used in some bars and restaurants in which they keep a record of what you have bought and you pay for it laterCan you put these drinks on my tab?
4pick up the tab to pay for something, especially when it is not your responsibility to payTaxpayers are picking up the tab for the government’s mistakes.
5 (also tab stop)COMPUTING a button on a computer keyboard that you press to move forward to a particular place on a line of text