‖n. pl. [ NL., fr. Gr. &unr_; long + &unr_; tail. ] (Zool.) A subdivision of decapod Crustacea, having the abdomen largely developed. It includes the lobster, prawn, shrimp, and many similar forms. Cf. Decapoda. [ 1913 Webster ]
a. (Zool.) Same as Macrurous. [ 1913 Webster ]
n. (Zool.) One of the Macrura. [ 1913 Webster ]