mainline
Inject into veins
Mainline means principal or dominant—the main line of something.
A mainline railroad is the primary route, not a branch.
Mainline Protestantism refers to established, traditional denominations.
In drug slang, to mainline is to inject directly into a vein for fastest effect: He started smoking heroin but eventually mainlined it.
The metaphor extends to anything consumed intensively: mainlining coffee to stay awake.
Pointed implement for sewing
- syringeMedical injection tool
- IVVein-delivered medication method
- intravenousInto the vein
- veinVessel toward heart
shot · fix · spike · rig · works · tracks · injection · shoot
Path or monitored route
- locomotiveRailway pulling machine
- freightGoods being transported
- trunkMain stem or storage
- expressState or fast train
branch · junction · depot · platform · signal · conductor · passenger · commuter
Having superior influence
- primaryChief in importance
- principalChief school administrator
- conventionalFollowing accepted practices
- orthodoxConforming to established belief
established · standard · traditional · accepted · prevailing · predominant · core · chief
Strike with open hand
- dopeSlang triple-threat term
- skagHeroin in slang
- tarFile bundling utility
- horseDomesticated riding animal
junk · poppy · nod · chipping · bindle · bundle · deck · eighth
State of needing another
- withdrawalAct of taking away
- cravingPowerful urge to have
- toleranceWillingness to accept difference
- relapseReturn to former illness
recovery · detox · rehabilitation · methadone · abstinence · intervention · substance · compulsion
needle
Pointed implement for sewing
- syringeMedical injection tool
- IVVein-delivered medication method
- intravenousInto the vein
vein · shot · fix · spike · rig · works · tracks · injection · shoot · bang
track
Path or monitored route
- locomotiveRailway pulling machine
- freightGoods being transported
- trunkMain stem or storage
express · branch · junction · depot · platform · signal · conductor · passenger · commuter · rail
dominant
Having superior influence
- primaryChief in importance
- principalChief school administrator
- conventionalFollowing accepted practices
orthodox · established · standard · traditional · accepted · prevailing · predominant · core · chief · leading
smack
Strike with open hand
horse · junk · poppy · nod · chipping · bindle · bundle · deck · eighth · stuff
dependence
State of needing another
- withdrawalAct of taking away
- cravingPowerful urge to have
- toleranceWillingness to accept difference
relapse · recovery · detox · rehabilitation · methadone · abstinence · intervention · substance · compulsion · habit
- rail yardsswitchyard, marshalling yards, receiving yard, yard crew, yardmaster
- train termsall aboard, engine, departure time, arrival time, passenger car
- transitbus, subway, train, metro, light rail
- road featurescurve, bend, straightaway, stretch, junction
- routesroad, path, route, highway, freeway
- British Railcarriage, guard, signal box, level crossing, platform
mainlinebranch
Division or woody limb
fringe · subsidiary · tributary · secondary · peripheral
mainlinefringe
Outermost edge or margin
alternative · unorthodox · unconventional · heterodox · radical
mainlinebranch line
Secondary railway from trunk
branch · spur · siding · feeder line · local line