fin
noun
fɪn
noun
1
one
of
the
thin
body
parts
that
a
fish
uses
to
swim
鱼鳍
2
part
of
a
plane
that
sticks
up
at
the
back
and
helps
it
to
fly
smoothly
〔飞机的〕垂直尾翼
3
tail fin
also
又作
a
thin
piece
of
metal
that
sticks
out
from
a
car
or
bomb
at
the
back
〔汽车、炸弹的〕鳍状稳定板
4
a
FLIP-PER
〔帮助加快游泳速度的〕脚蹼，鸭脚板