A crustacean of the order Decapoda, such as a shrimp, crab, or lobster, characterized by having ten limbs. The marine biologist studied the decapod to understand its unique locomotion.
A cephalopod mollusk, such as a squid or cuttlefish, having ten arms or tentacles. Squids are common decapods often encountered by deep-sea divers.
A steam locomotive with ten driving wheels (a 2-10-0 wheel arrangement). The railway museum restored a 1920s decapod that once hauled heavy freight.