fin
noun /fɪn/
/fɪn/
- enlarge imagea thin flat part that sticks out from the body of a fish, used for swimming and keeping balance
（鱼的）鳍 - enlarge imagea thin flat part that sticks out from the body of a vehicle, an aircraft, etc., used for improving its balance and movement
鳍状物，翼（车辆、航空器等用以保持平衡等的突出窄扁部分） - tail fins
垂直尾翼
- tail fins
词源Old English finn, fin, of Germanic origin; related to Dutch vin and probably ultimately to Latin pinna ‘feather, wing’.