cotter pin


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

Examples of cotter pin in a Sentence

Recent Examples on the Web The burner tubes on most gas grills are removable, too; look for a single screw or cotter pin on one end of each tube. Joe Lindsey, Popular Mechanics, 23 Apr. 2021 Someone stole a Bluetooth speaker, a foot brake pedal cotter pin and cut electrical wiring from a parked motorcycle in the 100 block of South Marion Street between 9 a.m. May 27 and 1 p.m. May 29. Pioneer Press Staff,, 3 June 2019 Most gas grill burner tubes are removable as well (look for simple cotter pins on one end, although some models use screws). Joe Lindsey, Popular Mechanics, 14 May 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cotter pin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of cotter pin

1881, in the meaning defined above

Learn More About cotter pin

Time Traveler for cotter pin

Time Traveler

The first known use of cotter pin was in 1881

See more words from the same year

Dictionary Entries Near cotter pin

cotter mill

cotter pin


See More Nearby Entries 

Statistics for cotter pin

Cite this Entry

“Cotter pin.” Dictionary, Merriam-Webster, Accessed 25 Jun. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More from Merriam-Webster on cotter pin Encyclopedia article about cotter pin


Test Your Vocabulary

Odd Habits and Quirks

  • image1926873504
  • Which of the following best describes an easily irritated person?
True or False

Test your knowledge - and maybe learn something along the way.

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!