Adjacent Words

Countersunk definitions

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Webster's 1913 Dictionary

Countersunk 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's 1913 Dictionary

Countersink Coun"ter*sink` (koun"t[~e]r*s[i^][ng]k`; 277), v. t. [imp. & p. p. Countersunk (-s[u^][ng]k`); p. pr. & vb. n. Countersinking.] 1. To chamfer or form a depression around the top of (a hole in wood, metal, etc.) for the reception of the head of a screw or bolt below the surface, either wholly or in part; as, to countersink a hole for a screw. 2. To cause to sink even with or below the surface; as, to countersink a screw or bolt into woodwork.