D defs.my
Entry 1 sense Webster, 1913

Meatus

· Me·a·tus · IPA /miˈeɪ.təs/
01 n. sing. & pl. A natural passage or canal; as, the external auditory meatus. See Illust. of Ear.
pl. Meatuses
  1. 1.
    A natural passage or canal; as, the external auditory meatus. See Illust. of Ear.(Anat.) See: Ear