Search Result for "air_passage":
Wordnet 3.0

NOUN (1)

1. a duct that provides ventilation (as in mines);
[syn: air passage, air duct, airway]



WordNet (r) 3.0 (2006):

air passage
    n 1: a duct that provides ventilation (as in mines) [syn: air
         passage, air duct, airway]