Wordnet 3.0
NOUN (1)
1. 
 alcoholic beverage taken before a meal as an appetizer; 
WordNet (r) 3.0 (2006):
aperitif
    n 1: alcoholic beverage taken before a meal as an appetizer
Moby Thesaurus II by Grady Ward, 1.0:
24 Moby Thesaurus words for "aperitif":
   Mickey, Mickey Finn, antepast, antipasto, appetizer, canape,
   chaser, cocktail, doch-an-dorrach, drink, eye-opener, foretaste,
   highball, knockout drops, mixed drink, nightcap, parting cup,
   pousse-cafe, punch, smorgasbord, stirrup cup, sundowner,
   wee doch-an-dorrach, whet