WordReference Random House Unabridged Dictionary of American English © 2025
cross′ hairs′,
- OpticsAlso called cross wires. 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.
- Printingmarks for aiding in the positioning of overlaying images for correct registration in printing. Cf. register (def. 11b).
- 1880–85
'cross hairs' also found in these entries (note: many are not synonyms or translations):