Search Result for "echinoderm": 
Wordnet 3.0

NOUN (1)

1. marine invertebrates with tube feet and five-part radially symmetrical bodies; 



The Collaborative International Dictionary of English v.0.48:

Echinoderm \E*chin"o*derm`\, n. (Zo["o]l.)
   One of the Echinodermata.
   [1913 Webster]


WordNet (r) 3.0 (2006):

echinoderm
    n 1: marine invertebrates with tube feet and five-part radially
         symmetrical bodies