Wordnet 3.0
NOUN (1)
1. 
 virility drug (trade name Cialis) used to treat erectile dysfunction in men; 
[syn: tadalafil, Cialis]
WordNet (r) 3.0 (2006):
tadalafil
    n 1: virility drug (trade name Cialis) used to treat erectile
         dysfunction in men [syn: tadalafil, Cialis]