D defs.my
Entry 1 sense Webster, 1913

Uropod

· U·ro·pod · IPA /ˈjʊəɹəˌpɒd/
01 n. Any one of the abdominal appendages of a crustacean, especially one of the posterior ones, which are often larger than the rest, and differ…
  1. 1.
    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.(Zool.) See: Crustacea, Stomapoda