Search Result for "prothorax": 
Wordnet 3.0

NOUN (1)

1. the anterior part of an insect's thorax; bears the first pair of legs; 



The Collaborative International Dictionary of English v.0.48:

Prothorax \Pro*tho"rax\, n. [Pref. pro- + thorax.] (Zool.)
   The first or anterior segment of the thorax in insects. See
   Illusts. of Butterfly and Coleoptera.
   [1913 Webster]


WordNet (r) 3.0 (2006):

prothorax
    n 1: the anterior part of an insect's thorax; bears the first
         pair of legs