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more about countersinking
countersinking |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: 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.
more about countersinking