(from the article `amphipod`) The sexes are separate, males often being characterized by enlarged gnathopods (claws on the second thoracic segment) used to grasp females during ... Found on http://www.britannica.com/eb/a-z/g/40
Gnath'o·pod noun [ Greek gna`qos the jaw + -pod .] (Zoology) A gnathopodite or maxilliped. See Maxilliped . Found on http://www.encyclo.co.uk/webster/G/39