main lines
Primary railway tracks
Main lines are the primary routes in a transportation or utility network—the major railroad tracks, highways, or pipelines that carry the heaviest traffic or flow.
In drug slang, to mainline is to inject directly into a vein for faster effect: He started mainlining heroin.
The noun form describes this practice: years of main lines had ruined her veins.
Track system for trains
- subwayUnderground transit passage
- trainsLinked rail carriages
- metroUrban rail transit
- transitMovement between places
track · station · terminal · junction · express · intercity · commute · passengers
Cylindrical fluid carriers
- cablesHeavy ropes or wires
- electricityEnergy from charged particles
- waterClear essential liquid
- gasFormless, expanding substance
sewage · telecommunications · grid · conduits · ducts · plumbing · wiring · supply
Major intercity roads
- arteriesTubes carrying oxygenated blood
- thoroughfaresPublic roads for transit
- corridorsEnclosed building passages
- interstatesHighways between states
expressways · freeways · boulevards · trunk roads · arterials · traffic · congestion · interchange
Concentrated attention point
- priorityStatus of greater importance
- coreCentral essential portion
- emphasisStress given to something
- directionWay something faces
approach · initiative · objective · thrust · agenda · policy · central · pivotal
Storyline or land parcel
- arcCurved line segment
- central themePrimary underlying message
- protagonistStory's central figure
- conflictOpposition between parties
resolution · subplot · narrative · script · teleplay · screenplay · continuity · development
railway
Track system for trains
transit · track · station · terminal · junction · express · intercity · commute · passengers · freight
pipes
Cylindrical fluid carriers
- cablesHeavy ropes or wires
- electricityEnergy from charged particles
- waterClear essential liquid
gas · sewage · telecommunications · grid · conduits · ducts · plumbing · wiring · supply · distribution
highways
Major intercity roads
- arteriesTubes carrying oxygenated blood
- thoroughfaresPublic roads for transit
- corridorsEnclosed building passages
interstates · expressways · freeways · boulevards · trunk roads · arterials · traffic · congestion · interchange · network
focus
Concentrated attention point
direction · approach · initiative · objective · thrust · agenda · policy · central · pivotal · key
plot
Storyline or land parcel
- arcCurved line segment
- central themePrimary underlying message
- protagonistStory's central figure
conflict · resolution · subplot · narrative · script · teleplay · screenplay · continuity · development · climax
- railroadstrains, train, tracks, track, locomotive
- railwaystrains, train, locomotives, locomotive, tracks
- trade routesspice route, silk road, Silk Road, cargo routes, merchant routes
- transit routesbus route, bus routes, tram route, train route, light rail
- plumbingpipes, valves, fittings, faucets, drains
- rail infrastructurerailway tracks, rail tracks, freight yards, rail terminals, switches
main linesbranch lines
Secondary railway connections
feeder lines · spurs · sidings · short lines · light rail
main linestangents
Lines meeting curves once
digressions · footnotes · asides · side notes · minor points
main linesside roads
Secondary, smaller thoroughfares
byways · back roads · side streets · detours · service roads
main, line, lines, mains, mainly, mainland, mainlands, mainstream, mainstreams