What does "counter" refer to in "countersink"?

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Music by Eric Matyas
https://www.soundimage.org
Track title: Ancient Construction

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Chapters
00:00 What Does &Quot;Counter&Quot; Refer To In &Quot;Countersink&Quot;?
00:43 Accepted Answer Score 6
00:59 Answer 2 Score 5
01:40 Answer 3 Score 1
02:38 Answer 4 Score 0
03:37 Thank you

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Full question
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Tags
#meaning #etymology #meaningincontext

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