A pile of hairpins.
hairpin definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a small, usually -shaped, piece of wire, shell, etc., for keeping the hair or a headdress in place
formed like a hairpin: a hairpin turn
hairpin definition by American Heritage Dictionary
- A thin cylindrical strip of metal or other material bent in the shape of a long U, used to secure a hairdo or headdress.
- Something shaped like a hairpin, especially a sharp turn in a road.