Coun"ter*sunk` (-s?nk`), 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.

 

© Webster 1913.

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