Countersunk

Countersunk

(1): (imp. & p. p.) of Countersink

(2): (p. p. & a.) Sunk into a chamfer; as, a countersunk bolt.

(3): (p. p. & a.) Chamfered at the top; - said of a hole.

(4): (p. p. & a.) Beveled on the lower side, so as to fit a chamfered countersink; as, a countersunk nailhead.