flipper

n. 鳍状肢, (潜水用)脚蹼
【化】 挡泥板

flip.per

n.（名词）
A wide, flat limb, as of a seal, whale, or other aquatic mammal, adapted for swimming.
鳍，鳍足：海豹、鲸或其它水生哺乳动物的宽而扁的适于游泳的肢
A rubber covering for the foot having a flat, flexible portion that widens as it extends forward from the toes, used in swimming and diving.Also called In this sense, also called fin
脚蹼；橡皮脚掌：一种戴在脚上用于游泳或潜水的橡皮覆盖物，其扁平、柔韧的部分从脚趾处向前伸展变宽也作 在此意义上也可称作 fin