Countersinking
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. [1913 Webster]

2. To cause to sink even with or below the surface; as, to countersink a screw or bolt into woodwork. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • countersinking — coun·ter·sink || kaÊŠntÉ™rsɪŋk v. make (the head of a bolt, nail, etc.) flush or level with a surface …   English contemporary 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 — 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

  • machine tool — machine tooled, adj. a power operated machine, as a lathe, used for general cutting and shaping of metal and other substances. [1860 65] * * * Stationary, power driven machine used to cut, shape, or form materials such as metal and wood. Machine… …   Universalium

  • 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 — /ˈkaʊntəsɪŋk/ (say kowntuhsingk) verb (t) (countersunk, countersinking) 1. to enlarge the upper part of (a hole or cavity), especially by chamfering, to receive the cone shaped head of a screw, bolt, etc. 2. to cause (the head of a screw, bolt,… …   Australian English 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

  • a conterbore — 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 …   The Collaborative International Dictionary of English

  • 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 …   The Collaborative International Dictionary of English

  • 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

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