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countersink

DEFINITIONS OF: countersink

1

v insert (a nail or screw below the surface, as into a countersink)

Synonyms:
set
Type of:
bury, sink
embed deeply

n 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

Type of:
hole
an opening deliberately made in or through something

n a bit for enlarging the upper part of a hole

Synonyms:
counterbore, countersink bit
Type of:
bit
the cutting part of a drill; usually pointed and threaded and is replaceable in a brace or bitstock or drill press
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