| 1. | any crustacean of the order Decapoda, having five pairs of walking legs, including the crabs, lobsters, crayfish, prawns, and shrimps. |
| 2. | any dibranchiate cephalopod having ten arms, as the cuttlefish or squid. |
| 3. | (initial capital letter ) a steam locomotive having a two-wheeled front truck, ten driving wheels, and no rear truck. |
| 4. | belonging or pertaining to the decapods. |
| 5. | having ten feet or legs. |