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countersink Definition

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countersink
verb(coun-ter-sink)
insert (a nail or screw below the surface, as into a countersink)
Synonyms: set,
countersink
noun(coun-ter-sink)
a bit for enlarging the upper part of a hole
Synonyms: counterbore, countersink bit,
countersink
noun(coun-ter-sink)
a hole (usually in wood) with the top part enlarged so that a screw or bolt will fit into it and lie below the surface

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