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counterbore

noun

Etymology

From counter- (“against”) + bore (“hole”).

  1. inherited from *burōną✻
  2. inherited from *borōn✻
  3. inherited from borian — “to pierce”
  4. inherited from boren
  5. prefixed as counterbore — “counter + bore”

Definitions

  1. A cylindrical recess, typically machined at the mouth of a hole to admit a screw (such as…

    A cylindrical recess, typically machined at the mouth of a hole to admit a screw (such as a cap screw) so that the screw sits flush with a surface.

  2. The cutter used to cut such a recess. (Also used, at less depth, for spotfacing.)

    • Meronyms: flute, pilot (the land at the tip, which rides the hole as a guide), shank

  3. To create such a cylindrical recess.

The neighborhood

Vish — recursive loop

No curated loop yet for counterbore. Loops are being traced one word at a time while the ingestion pipeline matures.

sense glosses and etymology drawn from English Wiktionary · source · CC-BY-SA