decapod /ˈdɛkəpɒd/noun 3adjective 1forms 2 noun3 •Any of various animals having ten legs or similar appendages, especially mollusks such as squid and cuttlefish. •Any crustacean of the order Decapoda, such as crabs or lobsters. •A nickname for either the 0-10-0 or 2-10-0 train configurations. adjective1 •Having ten legs. formsDecapods · decapods