Definition of "nostril"

nostril

/ˈnɒstɹɪl/

noun
plural nostrils
1. Either of the two orifices located on the nose (or on the beak of a bird); used as a passage for air and other gases to travel the nasal passages.
  Quotations
  […] whether it bee that they bee broken winded and purſiue, or otherwiſe bitten and ſtung with venomous beaſts; in which caſes, there muſt be an injection made vp into the noſthrils, of the juice of Rue in wine.
  1601, Plinius Secundus, translated by Philemon Holland, The Hiſtorie of the World. Commonly Called, the Naturall Hiſtorie […] ‎, London: Impenſis G. B, Book L, Chapter XIII, page 58