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Pronunciation:  'kaûntu`singk

WordNet Dictionary
  1. [n]  a bit for enlarging the upper part of a hole
  2. [n]  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
  3. [v]  insert (a nail or screw below the surface, as into a countersink)

COUNTERSINK is a 11 letter word that starts with C.


 Synonyms: counterbore, countersink bit, set
 See Also: bit, bury, hole, sink



Webster's 1913 Dictionary
  1. \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.
  2. \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
    Note: In the United States a flaring cavity formed by
          chamfering the edges of a round hole is called a
          countersink, while a cylindrical flat-bottomed
          enlargement of the mouth of the hole is usually called
          {a conterbore}.
    2. A drill or cutting tool for countersinking holes.