tragus

from WordNet (r) 3.0 (2006)

tragus
    n 1: a small cartilaginous flap in front of the external opening
         of the ear

from The Collaborative International Dictionary of English v.0.48

Tragus \Tra"gus\, n. [NL., fr. Gr. ? a part of the inner ear.]
   (Anat.)
   The prominence in front of the external opening of the ear.
   See Illust. under {Ear}.
   [1913 Webster]