NOSTRIL

nostril. Nostril, n. the inward cavity of the nose

---

Nos″tril (?), n. [[OE. nosethril, nosethirl, AS. nosþyrl; nos for nosu nose + þyrel opening, hole, from þyrel pierced, for þyrhel, fr. purh through. √261. See Nose, and Through, and cf. Thrill.]] 1. 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. 2. Perception; insight; acuteness.
Methinks a man Of your sagacity and clear nostril should Have made another choice. B. Jonson.