fin (n.)
- aquatics
- backstroke
- bathe
- bathing
- breaststroke
- buck
- butterfly
- cartwheel
- cent
- century
- cinque
- copper
- crawl
- dime
- diving
- dollar
- fish
- five
- five-spot
- fiver
- fivesome
- flapper
- flipper
- floating
- grand
- mill
- mullet
- natation
- nickel
- penny
- pentad
- pentagon
- pentagram
- pentahedron
- pentameter
- pentathlon
- quarter
- quint
- quintet
- quintuplet
- sawbuck
- sidestroke
- skin
- smacker
- surfboarding
- surfing
- swim
- swimming
- ten-spot
- tenner
- wading
- yard
