A clipped form of "gratuity" used in the restaurant and hospitality industry to refer to the tip added to a customer's bill. Grat appears on receipts, in back-of-house conversations, and in the daily mental math of servers everywhere. It can refer to both the automatic service charge added to large parties ("mandatory grat") and any tip left voluntarily. The shorthand is so embedded in food-service culture that many industry workers use it exclusively over the full word.
The table of twelve had an automatic grat added, so she didn't have to stress about the tip.
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(slang) A gratuity or tip.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.