cross hair

or crosshair

nounUsually cross hairs .
  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).

Origin of cross hair

First recorded in 1880–85 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

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