Meatus
Pronunciation : Me*a"tus
Part of Speech : n.
Etymology : [L., a going, passage, fr. meare to go.] (Anat.)
Definition : Defn: A natural passage or canal; as, the external auditory meatus. See Illust. of Ear.
sing. & pl.; E. pl. Meatuses (.
Source : Webster's Unabridged Dictionary, 1913