III. WORDS RELATING TO MATTER
II. INORGANIC MATTER
2. Fluid matter; fluids in motion
[Channel for the passage of air] Airpipe.
[Nouns] air pipe, air tube; airhole, blowhole, breathinghole, venthole; shaft, flue, chimney, funnel, vent, nostril, nozzle, throat, weasand, trachea; bronchus, bronchia; larynx, tonsils, windpipe, spiracle; ventiduct, ventilator; louvre, jalousie, Venetian blinds; blowpipe (wind) [more]; pipe (tube) [more]; jhilmil; smokestack.