D defs.my
Entry 2 senses Webster, 1913

Nostril

/nŏs'trəl/ · Nos·tril · IPA /ˈnɑ.stɹəl/
01 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 anter…
  1. 1.
    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.(Anat.)
  2. 2.
    Perception; insight; acuteness.[Obs.]
    “Methinks a man Of your sagacity and clear nostril should Have made another choice.” B. Jonson.