one's line of sight; one's gaze; one's eyes (looking); glance; gaze; look

line; stripe; stria

line (e.g. telephone line); wire

ray (e.g. X-ray); beam

line (e.g. of a railroad); track; route; lane

outline; contours; form

level

division

line (of action); position; approach; policy; principle

impression one leaves; air one gives off

(one's) gaze; direction in which one is looking

point of view; standpoint

line covering someone's eyes (in an edited photograph)

straight line

to look downwards (at); to lower one's gaze; to drop one's eyes

Meteorology

(weather) front

Military

front line; the front; battlefront; forward area

radio (communication)

Nouns which may take the genitive case particle 'no'

wireless; not using wires

beam; light ray

(war) front

front line; forefront