fin
noun [ C ] uk/fɪn/ us/fɪn/
(FISH/AIRCRAFT)
鳍；（飞机的）翅（片）；鳍状物
a thin vertical part sticking out of the body of especially a fish or an aircraft that helps balance and movement
We could see the fin of a shark as it slowly circled our boat. 我们能看到绕着我们的船缓缓转圈的鲨鱼的鳍。
a fish's dorsal fin 鱼的背鳍
The aircraft has a long tail fin. 这架飞机的尾翼很长。
(HAIRSTYLE)
鱼鳍头（男性的一种发型，头发从两边往中间梳，在头顶如鱼鳍般高高凸起）
a hairstyle, usually worn by men, where the hair is combed from the sides towards the centre so that it sticks up like a fin on top of the head