pourboire[Français]

nom
1 : an award (as for meritorious service) given without claim or obligation
2 : a relatively small amount of money given for services rendered (as by a waiter)
3 : a relatively small amount of money given for services rendered (as by a waiter)
4 : a relatively small amount of money given for services rendered (as by a waiter)
verbe
1 : cause to tilt