great auricular nerve

[grāt]
n.
  1. A nerve arising from the second and third cervical nerves and supplying the skin of part of the ear, the adjacent portion of the scalp, cheek, and angle of the jaw.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.