The Collaborative International Dictionary of English v.0.48:
Amphipod \Am"phi*pod\, n. (Zool.) One of the Amphipoda. [1913 Webster] AmphipodThe Collaborative International Dictionary of English v.0.48:
Amphipod \Am"phi*pod\, Amphipodan \Am*phip"o*dan\, a. (Zool.) Of or pertaining to the Amphipoda. [1913 Webster]WordNet (r) 3.0 (2006):
amphipod n 1: a kind of malacostracan crustacean