nostril

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nostril

 [nos´tril]
either aperture of the nose; see nares.

na·ris

, pl.

na·res

(nā'ris, -res), [TA]
Anterior opening to the nasal cavity.
[L.]

nostril

(nŏs′trəl)
n.
Either of the external openings of the nose; a naris.

nos·tril

(nos'tril)
Anterior opening to either side of the nasal cavity.
Synonym(s): naris, prenaris.
[L. naris]

nostril

One of the paired openings into the (SC)nose(D) that contains hairs which can trap gross particulate matter in the inhaled air.

nostril

or

nares

an external opening of the nose leading into the nasal cavity.