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(Mechanical Engineering) (functioning as singular) a device for lifting heavy weights consisting of two or more spars lashed together at the upper ends from which a lifting tackle is suspended. Also called: shears
[C19: variant of shear legs]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014