COUNTERSINK
- to set the head of a fastener at or below surface level [v COUNTERSINKING, COUNTERSINKS, COUNTERSUNK]
- Enlarge and bevel the rim of (a drilled hole) so that a screw, nail, or bolt can be inserted flush with the surface
- Drive (a screw, nail, or bolt) into such a hole
- to make a countersink on (a hole) [v COUNTERSANK, COUNTERSUNK, COUNTERSINKING, COUNTERSINKS]