uropod

One of the last pair of posterior abdominal appendages of certain crustaceans, such as the lobster or shrimp.

Any abdominal limb of an arthropod; an appendage of the urosome.

Any one of the abdominal appendages of a crustacean, especially one of the posterior ones, which are often larger than the rest, and different in structure, and are used chiefly in locomotion. See Illust. of crustacea, and stomapoda.

either of the two posterior abdominal appendages of the lobster, shrimp and some other crustaceans