Trinkgeld

Etymology
From. Equivalent to, meaning an extra to buy drinks with.

Noun

 * 1) tip small amount of money given to service providers, such as waiters, hairdressers, taxi drivers etc.
 * 2)  any small or insufficient amount of money, e.g. a low wage

Usage notes

 * Tips are not strictly expected in Germany and Austria, but one should at least round up slightly. The polite custom is to tip between 5 and 10 percent of the total of a bill.