Dictionary

cotter pin

noun

Definition of COTTER PIN

:  a half-round metal strip bent into a pin whose ends can be flared after insertion through a slot or hole

First Known Use of COTTER PIN

1881

Browse

Next Word in the Dictionary: cotterwayPrevious Word in the Dictionary: cotter millAll Words Near: cotter pin
May 28, 2015
fictioneer Hear it
someone who writes fiction
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears