Tail-fan



noun, Zoology.
1.
the fanlike posterior appendage of crayfish and lobsters, consisting of a telson and two uropods, used for rapid backward propulsion.
noun
1.
the fanned structure at the hind end of a lobster or related crustacean, formed from the telson and uropods

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    noun 1. caudal fin. 2. Automotive. See under fin1 (def 7). noun 1. a membranous, winglike or paddlelike organ attached to any of various parts of the body of fishes and certain other aquatic animals, used for propulsion, steering, or balancing. 2. Nautical. a horizontal, often adjustable, winglike appendage to the underwater portion of a […]

  • Tailfirst

    adverb 1. with the tail or rear part foremost.



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