Word Study
air shaft
CIDE DICTIONARY
air shaft,
A passage, usually vertical, for admitting fresh air into a mine or a tunnel. [1913 Webster]
THESAURUS
air shaft
air duct, air hole, air passage, air tube, airway, blowhole, breathing hole, louver, louverwork, naris, nostril, shaft, spilehole, spiracle, touchhole, transom, vent, ventage, venthole, ventiduct, ventilating shaft, ventilator, wind tunnelFor further exploring for "air shaft" in Webster Dictionary Online