|Origin:||tabulator 'tab key' (19-21 centuries), from tabulate|
|Origin:||Partly from table|
a tab key
an amount of money that you owe, or a record of an amount of money that you owe:
money that you owe
The tab for the campaign was nearly $500 million.
I'll put it on your tab and you can pay tomorrow.
He ran up a $4000 tab in long-distance calls.
to pay for something, especially when it is not your responsibility to pay:
Taxpayers will pick up the tab for the stadium.
a) especially American EnglishDFDT
a small piece of metal that you pull to open a can of drink [= ring pull British English]
a small piece of metal, plastic, or paper that you pull to open something
a small piece of paper, cloth, plastic etc that sticks out from the edge of something, so that you can find it more easily:
small piece of paper/plastic etcD
an index tab labeled 'Blackman'
6 also license tab American English
a small piece of sticky plastic with a date on it that you put on your car's license plate to show that the car is legally allowed on the road
to watch someone or something carefully to check what they are doing:
The police have been keeping tabs on Rogers since he got out of prison.
a form of the illegal drug LSD or ecstasy:
a tab of acid