Category:Countersunk

Coun"ter*sunk` (-snk`), p. p. & a. from Countersink.

1. Chamfered at the top; -- said of a hole.

2. Sunk into a chamfer; as, a countersunk bolt.

3. Beveled on the lower side, so as to fit a chamfered countersink; as, a countersunk nailhead.