The Collaborative International Dictionary of English v.0.48:
Isopod \I"so*pod\, a. (Zool.) Having the legs similar in structure; belonging to the Isopoda. -- n. One of the Isopoda. [1913 Webster]WordNet (r) 3.0 (2006):
isopod n 1: any of various small terrestrial or aquatic crustaceans with seven pairs of legs adapted for crawling