Word.ws English Dictionary

back-countersink

back-countersink verb: to countersink from the backside of a workpiece by using a tool that passes through a through hole, deploys a cutting edge (or receives it by manual insertion from an operator), countersinks the far side, retracts the cutting edge (or has it removed), and then retreats back through the hole (toward the tool's origin).

Verb

back-countersink (third-person singular simple present back-countersinks, present participle back-countersinking, simple past back-countersank or back-countersunk, past participle back-countersunk)

  1. To countersink from the backside of a workpiece by using a tool that passes through a through hole, deploys a cutting edge (or receives it by manual insertion from an operator), countersinks the far side, retracts the cutting edge (or has it removed), and then retreats back through the hole (toward the tool's origin).
    • We won't need any second operation on these parts. We're going to back-counterbore and back-countersink all of these features on the backside.

Noun

back-countersink (plural back-countersinks)

  1. A countersink that is so made.
    • There's no second operation on these parts. The backside features are all back-counterbores and back-countersinks.

Forms of back-countersink

Verb
third-person singular presentback-countersinks
present participleback-countersinking
pastback-countersank
pastback-countersunk
past participleback-countersunk
Noun
pluralback-countersinks

Origin of back-countersink

From back- + countersink.

Questions about back-countersink

What does back-countersink mean?
Back-countersink means to countersink from the backside of a workpiece by using a tool that passes through a through hole, deploys a cutting edge (or receives it by manual insertion from an operator), countersinks the far side, retracts the cutting edge (or has it removed), and then retreats back through the hole (toward the tool's origin).
What part of speech is back-countersink?
Back-countersink can be a verb or a noun.
What is the past tense of back-countersink?
The past tense of back-countersink is back-countersank.

Words near back-countersink in the dictionary

  1. back-comb
  2. back-combed
  3. back-combing
  4. back-combs
  5. back-counterbore
  6. back-countersink
  7. back-cross
  8. back-crosses
  9. back-door
  10. back-door bandit
  11. back-door man

Source and license

Adapted from Wiktionary: back-countersink (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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