rock·​shaft ˈräk-ˌshaft How to pronounce rockshaft (audio)
: a shaft that oscillates on its journals instead of revolving

Word History

First Known Use

circa 1864, in the meaning defined above

Time Traveler
The first known use of rockshaft was circa 1864

Dictionary Entries Near rockshaft

Cite this Entry

“Rockshaft.” Dictionary, Merriam-Webster, Accessed 17 Jul. 2024.

Love words? Need even more definitions?

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