re·​bore (ˌ)rē-ˈbȯr How to pronounce rebore (audio)
rebored; reboring; rebores

transitive verb

: to bore an existing hole a second or subsequent time in order to widen it or to alter or improve its inner surfaces
After three years in the desert dust, I have just had to rebore the engine (another $1,400).Robert Lacville
To convert the 3-inch Ordnance Rifle to a breechloader, manufacturers sawed off the breech and screwed in a new steel breech … . The steel breech was rebored to 3.18 inches to attain the desired projectile size.Mitch Meador

Word History

First Known Use

circa 1792, in the meaning defined above

Time Traveler
The first known use of rebore was circa 1792

Dictionary Entries Near rebore

Cite this Entry

“Rebore.” Dictionary, Merriam-Webster, Accessed 29 Nov. 2023.

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