n. 扇形尾部, 鸭尾艄

[ noun ]
an overhang consisting of the fan-shaped part of the deck extending aft of the sternpost of a ship
<noun.artifact>

Fantail \Fan"tail`\ (f[a^]n"t[=a]l`), 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}.

fantail goldfish \fan"tail` gold"fish\, n. (Zo["o]l.)
a type of goldfish bred artificially, having a realtively
short oval body and a tail with four lobes arrayed somewhat
like a folding fan, as though forming a part of the surface
of a cone. Called also {fantail}.
[PJC]