Hypertext Webster Gateway: "meatus"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Meatus \Me*a"tus\, n. sing. & pl.; E. pl. {Meatuses}. [L., a
going, passage, fr. meare to go.] (Anat.)
A natural passage or canal; as, the external auditory meatus.
See Illust. of {Ear}.
From WordNet (r) 1.7 (wn)
meatus
n : a natural body passageway
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