'Meatus' definitions:

Definition of 'meatus'

From: WordNet
noun
A natural body passageway

Definition of 'Meatus'

From: GCIDE
  • 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. [1913 Webster]