fin

名词 fin:

1. the cardinal number that is the sum of four and one
   同义词：five, 5, V, cinque, quint, quintet, fivesome, quintuplet, pentad, Phoebe, Little Phoebe
2. one of a pair of decorations projecting above the rear fenders of an automobile
   同义词：tail fin, tailfin
3. one of a set of parallel slats in a door or window to admit air and reject rain
   同义词：louver, louvre
4. a shoe for swimming; the paddle-like front is an aid in swimming (especially underwater)
   同义词：flipper
5. a stabilizer on a ship that resembles the fin of a fish
6. organ of locomotion and balance in fishes and some other aquatic animals

动词 fin:

1. equip (a car) with fins
2. propel oneself through the water in a finning motion
3. show the fins above the water while swimming
   同义词：break water

1. A feather, wing, fin, or similar appendage.
   羽、翼或鳍状结构羽、翼、鳍或类似的悬着物
2. A part or an organ, such as an arm, a leg, a tail, or a fin, that is joined to the axis or trunk of a body.
   附器，附肢与身体的轴或躯干相连的部位或器官，如胳膊、腿、尾或鳍
3. The fish's tail fin was hurt.
   这条鱼的尾鳍受伤了。

fin

n.（名词）
A membranous appendage extending from the body of a fish or other aquatic animal, used for propelling, steering, or balancing the body in the water.
鳍：从鱼类或其他水生动物的身体延伸的膜状附肢，用以在水中推进、平衡或引导身体
Something resembling a fin in shape or function, as:
鳍状物：指外形或功能类似鱼鳍的东西，如：
A fixed or movable airfoil used to stabilize an aircraft, a missile, or a projectile in flight.
安定翼，直尾翅：用以稳定飞行中的飞机、导弹或发射体的固定式或活动式机翼
A projecting vane used for cooling, as on a radiator or an engine cylinder.
散热片：如在散热器或内燃机汽缸上的以供降温的外伸风向标
See tail fin
参见 tail fin
See flipper
参见 flipper
v.（动词）
finned,fin.ning,fins
v.tr.（及物动词）
To equip with fins.
装上翅片或鳍片
v.intr.（不及物动词）
To emerge with the fins above water.
将鳍露出水面
To swim, as a fish.
游泳：象鱼一样游泳
To lash the water with the fins. Used of a dying whale.
猛烈地挥动鳍：用鳍拍打水，常用于垂死的鲸

来源：
Middle English
中古英语
from Old English finn
源自 古英语 finn

fin
fin 2

n.Slang （名词）【俚语】
A five-dollar bill.
5美元的钞票

来源：
Yiddish finf [five]
意第绪语 finf [五]
from Old High German funf, finf * see penk we
源自 古高地德语 funf, finf *参见 penk we