1. (n.) One of the external openings of the nose, which give passage to the air breathed and to secretions from the nose and eyes; one of the anterior nares.

2. (n.) Perception; insight; acuteness.

air duct air hole air passage air shaft air tube airway antlia beak beezer bill blowhole breathing hole bugle conk louver louverwork muffle muzzle nares naris neb nib nose nostrils nozzle olfactories olfactory area olfactory cell olfactory nerves olfactory organ olfactory pit pecker proboscis rhinarium rostrum schnozzle shaft smeller snoot snout spilehole spiracle touchhole transom trunk vent ventage venthole ventiduct ventilating shaft ventilator wind tunnel