(n) power line
(n) geodesic line
(n) thick line
(n) diagonal (line)
(n) a sidetrack
a turnout
(n) the front (of a battlefield)
forefront
(P)
(n) underground wire or cable
(n) horizon (related to land)
(P)
(n) (comp) delay line
(n) Chuo Line (central railway line in Tokyo)
(n) linearity
(n) stop line
(exp) points and lines
(n) electron beam
electron ray
(n) heating element
electrically-heated wire
(n) telephone line
(n) the Tropic of Capricorn
(n) (comp) projector
(n) Toyoko Line (between Tokyo and Yokohama)
(n) isobar
(n) isotherm
(n) (in linguistics) an isogloss
(n) contour (line)
(n) isobath
(n) isopleth
(n) phase line
(n) fuse
(P)
(n) Antarctic Circle (latitude)
(n) soft X-rays
(n) two-wire-system
