Definitions
1.NounA transparent plate marked with a crosshair, grid, or scale which is used in an optical instrument, etc., to aid in alignment, counting, or measurement of objects being observed; also, the crosshair, grid, or scale on such a plate.
2.NounA master or template, comprising a pattern of lines and shapes, used in photolithography to create the tiny integrated circuits on a microchip.
3.NounAlternative form of reticule (“a little bag”).