tail fan


noun Zoology.

the fanlike posterior appendage of crayfish and lobsters, consisting of a telson and two uropods, used for rapid backward propulsion.

Origin of tail fan

First recorded in 1890–95

Example sentences from the Web for tail fan

British Dictionary definitions for tail fan

tail fan

noun

the fanned structure at the hind end of a lobster or related crustacean, formed from the telson and uropods