fan·tail /ˈfænˌtel/
扇形尾端
Fan·tail n. Zool. (a) A variety of the domestic pigeon, so called from the shape of the tail. (b) Any bird of the Australian genus Rhipidura, in which the tail is spread in the form of a fan during flight. They belong to the family of flycatchers. (c) the fantail goldfish.
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fantail
n : an overhang consisting of the fan-shaped part of the deck
extending aft of the sternpost of a ship