gra·tu·i·ty /grəˈtu:wəti, Brit grəˈtju:əti/ noun
plural gra·tu·i·ties [count] 1 formal : an amount of money given to a person (such as a waiter or waitress) who has performed a service : tip
▪ A 15 percent gratuity is automatically added to the restaurant bill. 2 Brit : an amount of money given to a retiring soldier or employee
▪ A 15 percent gratuity is automatically added to the restaurant bill.
