counterbore

1 of 2

transitive verb

coun·​ter·​bore
¦kau̇ntə(r)+
: to form a counterbore in : enlarge (part of a hole) by means of a counterbore

counterbore

2 of 2

noun

1
: a flat-bottomed enlargement of the mouth of a cylindrical bore
2
: a drill for making a counterbore compare countersink

Word History

Etymology

Transitive verb

counter- + bore

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Dictionary Entries Near counterbore

Cite this Entry

“Counterbore.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/counterbore. Accessed 19 Mar. 2024.

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