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2 definitions found

From: WordNet (r) 2.0

 countersank
      See countersink

From: WordNet (r) 2.0

 countersink
      n 1: 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
      2: a bit for enlarging the upper part of a hole [syn: counterbore,
          countersink bit]
      v : insert (a nail or screw below the surface, as into a
          countersink) [syn: set]
      [also: countersunk, countersank]