Kirschwasser n. : An alcoholic liquor, obtained by distilling the fermented juice of the small black cherry.

Example:
What is this ingredient used for cakes: Kirschwasser?

Taxonomy
Kirsch, cherry, German, free encyclopedia, fruit, cakes, sour cherry, chocolate, southern Germany, beverage, The cherries, English-speaking countries, liqueurs, almond, barrels, sugar, Alexis, Alcoholic beverages.

Defination from the web:
Kirschwasser, produced in Germany and bottled at 40% ABV. Kirschwasser (pronounced /KIRSH-VAHS-ər/, German for "cherry water") is a clear, colorless fruit brandy traditionally made from double ... Unlike cherry liqueurs and so-called "cherry brandies," Kirschwasser is not sweet. ...