1. Verb form
of Countersink
2. Unclassified
Chamfered at the top; -- said of a hole.
3. Unclassified
Sunk into a chamfer; as, a countersunk bolt.
4. Unclassified
Beveled on the lower side, so as to fit a chamfered countersink; as, a countersunk nailhead.
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