Search Result for "clypeus": 
Wordnet 3.0

NOUN (1)

1. a shield-like plate on the front of an insect's head; 



The Collaborative International Dictionary of English v.0.48:

Clypeus \Clyp"e*us\, n.; pl. Clypei. [L., a shield.] (Zool.)
   The frontal plate of the head of an insect.
   [1913 Webster]


WordNet (r) 3.0 (2006):

clypeus
    n 1: a shield-like plate on the front of an insect's head