Meaning Of Countersunk

imp. & p. p.

of Countersink

p. p. & a.

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

p. p. & a.

Sunk into a chamfer; as, a countersunk bolt.

p. p. & a.

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