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cross hair

or crosshair

noun

  1. Also called cross wire. one of the fine wires or fibers, strands of spider web, or the like, crossing in a focal plane of an optical instrument to center a target or object or to define a line of sight.
  2. one of the marks that aid in the positioning of overlaying images for correct registration in printing. Compare register ( def 11b ).


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Word History and Origins

Origin of cross hair1

First recorded in 1880–85

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cross-grainedcross hairs