rockshaft

noun
rock·​shaft | \ˈräk-ˌshaft \

Definition of rockshaft 

: a shaft that oscillates on its journals instead of revolving

First Known Use of rockshaft

circa 1864, in the meaning defined above

Keep scrolling for more

Learn More about rockshaft

Statistics for rockshaft

Look-up Popularity

Time Traveler for rockshaft

The first known use of rockshaft was circa 1864

See more words from the same year

More from Merriam-Webster on rockshaft

Rhyming Dictionary: Words that rhyme with rockshaft

Comments on rockshaft

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

WORD OF THE DAY

a knickknack or trinket

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

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!