goatee

from WordNet (r) 3.0 (2006)

goatee
    n 1: a small chin beard trimmed to a point; named for its
         resemblance to a goat's beard

from The Collaborative International Dictionary of English v.0.48

Goatee \Goat`ee"\, n.
   A part of a man's beard on the chin or lower lip which is
   allowed to grow, and trimmed so as to resemble the beard of a
   goat.
   [1913 Webster]