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2 definitions found
 for Jackscrew
From The Collaborative International Dictionary of English v.0.48 :

  Jackscrew \Jack"screw`\, n.
     A jack in which a screw is used for lifting, or exerting
     pressure. See Illust. of 2d Jack, n., 5.
     [1913 Webster]

From WordNet (r) 3.0 (2006) :

      n 1: screw-operated jack [syn: jackscrew, screw jack]

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