countersink

About 0.07 uses per million words.

Meaning

1. noun A conical recess, typically machined at the mouth of a hole to admit a screw (with a matching taper) so that the screw sits flush with a surface.
2. noun The cutter used to cut such a recess. (Also used, at less depth, for edge-breaking/deburring.)
3. verb To create such a conical recess.

   to countersink a hole for a screw

4. verb To cause to sink even with or below the surface.

   to countersink a screw or bolt into woodwork

Similar words

counterbore set countersink bit ream countersinker screw thread sinker screw box counter cotter

Often followed by

the bit is and holes for hole in them

Word family

countersinking countersinks countersunk