countersink

countersink - English Dictionary

[ noun ]
■ a bit for enlarging the upper part of a hole
counterbore , countersink bit

[ noun ]
■ 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

[ verb ]
■ insert (a nail or screw below the surface, as into a countersink)
set

Word list en

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