Wordnet 3.0
NOUN (1)
1.
any of various marine gastropods of the suborder Nudibranchia having a shell-less and often beautifully colored body;
[syn: sea slug, nudibranch]
The Collaborative International Dictionary of English v.0.48:
Nudibranch \Nu"di*branch\, a. (Zool.)
Of or pertaining to the Nudibranchiata. -- n. One of the
Nudibranchiata.
[1913 Webster]
WordNet (r) 3.0 (2006):
nudibranch
n 1: any of various marine gastropods of the suborder
Nudibranchia having a shell-less and often beautifully
colored body [syn: sea slug, nudibranch]