Countersink — Coun ter*sink , n. 1. An enlargement of the upper part of a hole, forming a cavity or depression for receiving the head of a screw or bolt. [1913 Webster] Note: In the United States a flaring cavity formed by chamfering the edges of a round hole… … The Collaborative International Dictionary of English
countersink — ► VERB (past and past part. countersunk) 1) enlarge and bevel the rim of (a drilled hole) so that a screw or bolt can be inserted flush with the surface. 2) drive (a screw or bolt) into such a hole … English terms dictionary
countersink — [kount′ər siŋk΄] vt. countersunk, countersinking 1. to enlarge the top part of (a hole in metal, wood, etc.) so that the head of a bolt, screw, etc. will fit flush with or below the surface 2. to sink the head of (a bolt, screw, etc.) into such a … English World dictionary
Countersink — A countersink is a conical hole cut into a manufactured object, or the cutter used to cut such a hole. A common usage is to allow the head of a countersunk bolt or screw, when placed in the hole, to sit flush with or below the surface of the… … Wikipedia
countersink — I. transitive verb (countersunk; sinking) Date: 1816 1. to make a countersink on (a hole) 2. to set the head of (as a screw) at or below the surface II. noun Date: 1816 1. a bit or drill for making a funnel shaped enlargement at the outer end of… … New Collegiate Dictionary
countersink and countersinking — A countersink is a tool with which a drilled hole s opening can be beveled in order to position the head of a screw or a bolt, used to join sections of a work, even with a material s outer surface. Countersinking is the method of using a… … Glossary of Art Terms
countersink bit — noun a bit for enlarging the upper part of a hole • Syn: ↑counterbore, ↑countersink • Hypernyms: ↑bit … Useful english dictionary
countersink — v., n. /kown teuhr singk /; v. also /kown teuhr singk /, v., countersank, countersunk, countersinking, n. v.t. 1. to enlarge the upper part of (a cavity), esp. by chamfering, to receive the cone shaped head of a screw, bolt, etc. 2. to cause (the … Universalium
countersink — 1. noun a conical recess, typically machined around a hole to admit a screw so that it sits flush with a surface. 2. verb to create such a conical recess … Wiktionary
countersink — coun·ter·sink || kaÊŠntÉ™rsɪŋk v. make (the head of a bolt, nail, etc.) flush or level with a surface … English contemporary dictionary
