cross hair

Or crosshair

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.

Word History and Origins

Origin of cross hair¹

First recorded in 1880–85