The Collaborative International Dictionary of English v.0.48:

Schnapps \Schnapps\, n. [G., a dram of spirits.]
   Holland gin. [U.S.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

schnapps
    n 1: any of various strong liquors especially a Dutch spirit
         distilled from potatoes [syn: schnapps, schnaps]

Moby Thesaurus II by Grady Ward, 1.0:

33 Moby Thesaurus words for "schnapps":
   John Barleycorn, alcohol, alcoholic beverage, alcoholic drink,
   aqua vitae, ardent spirits, beverage, booze, brew, drink, grog,
   hard liquor, inebriant, intoxicant, intoxicating liquor, liquor,
   little brown jug, potable, potation, punch bowl, rum,
   social lubricant, spirits, strong drink, strong waters,
   the Demon Rum, the bottle, the cup, the flowing bowl,
   the luscious liquor, the ruddy cup, toxicant, water of life