reticle

English

Borrowed from Late Latin reticulum, diminutive of Latin rete (“net”). Doublet of reticulum and reticule.

reticle (plural reticles)

A grid, network, or crosshatch found in the eyepiece of various optical instruments to aid measurement or alignment
(obsolete) Alternative form of reticule (“a little bag”)
- 1833, Francis Vesey, A General Digested Table and Index of Cases Argued and Determined in the High Court of Chancery, vol. 20, page ix:
  On the following day Mrs. Kent went into the bed-room; and laid a reticle, which contained the money, upon her bed; and afterwards returned into the sitting-room; leaving the door between that and the bed-room open. After she had remained in the sitting-room about five minutes, she sent Miss S. for the reticle; and it was not to be found.

Used in form “have somebody or something in one’s reticle”, meaning “to be targeting somebody or something”.

a gridwork or lattice of lines set into the eyepiece of optical instruments