(attributive, geometry) collinearity

copper wire

(acoustics, physics) a sound ray, an acoustic ray

tilde; over-line

wire diameter

underground line, specifically an underground cable or wire

an older or pre-existing rail line, as opposed to any newer line servicing the same area / the non-bullet train JR railway lines, the regular train lines as opposed to the shinkansen

a Japanese stringed instrument played by plucking, vaguely similar to a banjo / short for 三味線草 (shamisen-gusa): the shepherd's purse, Capsella bursa-pastoris

(uncommon) a Japanese stringed instrument played by plucking, vaguely similar to a banjo

stretch mark, pregnancy stretch mark