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English definition of “tab”

tab

noun [C]     /tæb/
a small piece of paper, metal, or cloth that is attached to the edge of something: The metal tabs at one end are where the wires fasten.
IT, INTERNET a small symbol on a website that gives you information about the different pages you can open on that website: Move between pages by clicking on the tabs at the top of the screen.
(also tab stop) IT a fixed position on a line of text that you are writing on a computer, etc. that can be reached by pressing the tab key
informal the amount of money that is charged for something: The committee will reimburse the state $70,000 of the $105,000 tab for a recent trade mission to Ireland. The tab to clean up the mess caused by the oil spill has already hit $9 million.pick up the tab (for sth) The state picks up the health care tab for many low-income clients.pay the tab (for sth) Pharmaceutical companies pay most of the tab for the trials.
a record of what you have ordered or used but not yet paid for, especially in a bar or restaurant: put sth on the/your tab Just put it on the tab, please.on sb's tab I ordered drinks for everyone, even though this was all going on my tab. They were put up in hotels on the state's tab.
(Definition of tab noun from the Cambridge Business English Dictionary © Cambridge University Press)
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