concha Meaning, Definition & Usage

  1. noun (anatomy) a structure that resembles a shell in shape

WordNet

Con"cha noun
Etymology
LL. (in sense 1), fr. concha. See Conch.
Definitions
  1. (Arch.) The plain semidome of an apse; sometimes used for the entire apse.
  2. (Anat.) The external ear; esp. the largest and deepest concavity of the external ear, surrounding the entrance to the auditory canal.

Webster 1913