countersink meaning and definition

COUNTERSINK noun

Definition of countersink (noun)

1. 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
2. a bit for enlarging the upper part of a hole
   • synonyms: counterbore, countersink bit

COUNTERSINK verb

Definition of countersink (verb)

1. insert (a nail or screw below the surface, as into a countersink)
   • synonyms: set