(n) bullet train (very high speed)
Shinkansen
(P)
(n) perpendicular line
(n) horizon (related to sea or lakes)
(P)
(n) (math) number line (e.g. on a graph)
real number line
(n) world line (physics)
(n) median line
(n) lifeline
(n) infra-red rays
(P)
(n) line of contact
no man's land
(n) (comp) polyline
(adj-na) insulated wire
(n) exclusive line (communications)
dedicated line
(n) (1) fascicle
(2) fiber bundle
fibre bundle
(n,vs) delineation
demarcation
(n) (comp) line spacing
(n) nematomorph
horsehair worm
gordian worm
hair worm (any of the parasitic nematode-like worms of phylum Nematomorpha)
(n) fee for a geisha's time
(n) rifling marks on a fired bullet
(n) (comp) linear network
(n) ruled surface
(n) linear velocity
(n) nematodes
(n) dosimeter
(n) scouting line
(n) asymptotic line
(n) hyperbolic curve
hyperbola
(n) bilinear
(n) bilinear
(n) Sobu Line (Chiba-Tokyo Railway)
(n) scan line (e.g. TV)