cross hair, cross wire – either of two fine mutually perpendicular lines that cross in the focus plane of an optical instrument and are use for sighting or calibration; “he had the target in his cross hairs”
eyepiece, ocular – combination of lenses at the viewing end of optical instruments
network – a system of intersecting lines or channels; “a railroad network”; “a network of canals”
t
-k
l)
ticulum, diminutive of r
