decapod
1. any crustacean of the mostly marine order Decapoda, having five pairs of walking limbs: includes the crabs, lobsters, shrimps, prawns, and crayfish
2. any cephalopod mollusc of the order Decapoda, having a ring of eight short tentacles and two longer ones: includes the squids and cuttlefish
3. (of any other animal) having ten limbs
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005