Search Result for "bronchodilator": 
Wordnet 3.0

NOUN (1)

1. a drug that relaxes and dilates the bronchial passageways and improves the passages of air into the lungs; 



WordNet (r) 3.0 (2006):

bronchodilator
    n 1: a drug that relaxes and dilates the bronchial passageways
         and improves the passages of air into the lungs