Nos"tril (?), n. [OE. nosethril, nosethirl, AS. nospyrl; nos for nosu nose + pyrel opening, hole, from pyrel pierced, for pyrhel, fr. purh through. See Nose, and Through, and cf. Thrill.]

1. Anat.

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.

⇒ In sperm whales, porpoises, and allied animals, there is only one nostril, which is situated on the top of the head and called a spiracle.

2.

Perception; insight; acuteness.

[Obs.]

Methinks a man Of your sagacity and clear nostril should Have made another choice. B. Jonson.

 

© Webster 1913.

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