1

countersink

verb coun·ter·sink \ ˈkau̇n-tər-ˌsiŋk \

Definition of countersink

countersunk play \ˈkau̇n-tər-ˌsəŋk\; countersinking
transitive verb
1 : to make a countersink on (a hole)
2 : to set the head of (something, such as a screw) at or below the surface

First Known Use of countersink

1816


2

countersink

noun

Definition of countersink

1 : a bit or drill for making a funnel-shaped enlargement at the outer end of a drilled hole
2 : the enlargement made by a countersink

Illustration of countersink

First Known Use of countersink

1816


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of very fine texture or delicate form

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