fin

Từ điển Oxford Advanced Learner 8th

fin [fin fins finned finning] BrE [fɪn] NAmE [fɪn] noun
1. a thin flat part that sticks out from the body of a fish, used for swimming and keeping balance
2. a thin flat part that sticks out from the body of a vehicle, an aircraft, etc, used for improving its balance and movement
•tail fins

Word Origin:
Old English finn, fin, of Germanic origin; related to Dutch vin and probably ultimately to Latin pinna ‘feather, wing’.

• Từ đồng nghĩa / Synonyms:
  flipper, louver, louvre, tail fin, tailfin, break water