tail fin Hear it!

tail fin definition

tail fin

noun

  1. a fixed or adjustable fin on the rear of a rocket, car, etc.
    sometimes written tailfin tail′·fin′

    noun

  2. Zool. a movable fin that forms the tail of a fish, the fluke of a whale, etc.

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

Comments
Improve this definition.
Do you have more to add? Share your linguistic knowledge or observation.
/Register to save your comments.