Countersink

['kaʊntəsɪŋk] or ['kaʊntɚ,sɪŋk]

Definition

(noun.) a hole (usually in wood) with the top part enlarged so that a screw or bolt will fit into it and lie below the surface.

Editor: Wendell--From WordNet

Definition

(v. t.) 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.

(v. t.) To cause to sink even with or below the surface; as, to countersink a screw or bolt into woodwork.

(n.) An enlargement of the upper part of a hole, forming a cavity or depression for receiving the head of a screw or bolt.

(n.) A drill or cutting tool for countersinking holes.

Checked by Delores