Concha
Pronunciation : Con"cha
Part of Speech : n.
Etymology : [LL. (in sense 1), fr. concha. See Conch.]
Definition : 1. (Arch.)
Defn: The plain semidome of an apse; sometimes used for the entire apse.
2. (Anat.)
Defn: The external ear; esp. the largest and deepest concavity of the external ear, surrounding the entrance to the auditory canal.
Source : Webster's Unabridged Dictionary, 1913