Word.ws English Dictionary

counterbore

counterbore noun: 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.

counterbore: a cylindrical recess, typically machined at the mouth of a hole to admit a screw (such as a cap...
Image: Dvortygirl, CC BY-SA 3.0, via Wikimedia Commons

Noun

counterbore (plural counterbores)

  1. 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

Verb

counterbore (third-person singular simple present counterbores, present participle counterboring, simple past and past participle counterbored)

  1. (transitive) To create such a cylindrical recess.

counterbore meaning in Tamil

counterbore in Tamil

துளைமெலிவு

Forms of counterbore

Noun
pluralcounterbores
Verb
third-person singular presentcounterbores
present participlecounterboring
past participlecounterbored
pastcounterbored

Origin of counterbore

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

Words formed from counterbore

Questions about counterbore

What does counterbore mean?
Counterbore means 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.
What is counterbore in Tamil?
Counterbore in Tamil is துளைமெலிவு. See Counterbore meaning in Tamil.
What part of speech is counterbore?
Counterbore can be a noun or a verb.
What is the plural of counterbore?
The plural of counterbore is counterbores.

Words near counterbore in the dictionary

  1. counterbluff
  2. counterbluffs
  3. counterboarding
  4. counterbond
  5. counterbonds
  6. counterbore
  7. counterbored
  8. counterbores
  9. counterboring
  10. counterborings
  11. counterboy

Source and license

Adapted from Wiktionary: counterbore (page history and authors); counterbore (Tamil Wiktionary) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “counterbore.” Word.ws, https://word.ws/counterbore. Based on Wiktionary, CC BY-SA 4.0.