7 letters · 9 points in Scrabble
noun a network of fine lines, dots, cross hairs, or wires in the focal plane of the eyepiece of an optical instrument
originBorrowed from Late Latin rēticulum, diminutive of Latin rēte (“net”). Doublet of reticulum, Reticulum, and reticule.
Etymology from Wiktionary, CC BY-SA 3.0