naris

n. nostril, nasal passage (Anatomy)

A nostril (or naris, pl. nares) is one of the two channels of the nose, from the point where they bifurcate to the external opening. In birds and mammals, they contain branched bones or cartilages called turbinates, whose function is to warm air on inhalation and remove moisture on exhalation. Fish do not breathe through their noses, but they do have two small holes used for smelling which may be called nostrils.
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Nar·is n. pl. nar·es The anterior opening on either side of the nasal cavity. naris, n the nostril, the external opening of the nose. [more]Naris - Community and Resources

Noun
1. any of the openings to the nasal cavities that allow air to flow through the cavities to the pharynx
(hypernym) orifice, opening, porta
(hyponym) nostril, anterior naris

N F
nostril; nose (pl.)