uropod
nounOne of the last pair of posterior abdominal appendages of certain crustaceans, such as the lobster or shrimp.
nounAny abdominal limb of an arthropod; an appendage of the urosome.
nounAny 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
either of the two