counterbore
From WikiWord, the free dictionary
English
Definitions
noun
- A cylindrical recess, typically machined around a hole to admit a screw so that it sits flush with a surface.
- The tool with which a counterbore is machined.
verb
- To create such a cylindrical recess.
Related words
Synonyms
countersinkcountersink bitthroughboredrawboreborescrew threadborerscrewthreadstud boltborewellhonebroadbushingcrossheadburrscrew box