/ Thesaurus / A Synonyms of air passage Find synonyms for: Noun1. air passage, air duct, airway, ductusage: a duct that provides ventilation (as in mines)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language