shear pin

noun

Definition of shear pin

: an easily replaceable pin inserted at a critical point in a machine and designed to break when stressed to excess

First Known Use of shear pin

circa 1931, in the meaning defined above

Keep scrolling for more

Learn More about shear pin

Statistics for shear pin

Look-up Popularity

Time Traveler for shear pin

The first known use of shear pin was circa 1931

See more words from the same year

More from Merriam-Webster on shear pin

Rhyming Dictionary: Words that rhyme with shear pin

Comments on shear pin

What made you want to look up shear pin? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to wander slowly or to speak indistinctly

Get Word of the Day daily email!

Test Your Vocabulary

Where in the World? A Quiz

  • peter bruegel tower of babel painting
  • What language does pajama come from?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Add Diction

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

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