English

Etymology

• main + line

Adjective

1. normal, principal or standard.
2. Of or pertaining to the principal route or line of a railway
3. Of or pertaining to a surface railway as distinct from an underground, elevated or light rail one.

Synonyms

• mainstream

Verb

1. To inject (a drug) directly into a vein.

Derived terms

• mainliner
• mainlining

See also

• main line

• Main line (railway), the principal artery of a railway system
• Main Line of Public Works, a railroad and canal system in Pennsylvania; also:
  • Main Line (Pennsylvania Railroad), Philadelphia to Pittsburgh
  • Pennsylvania Main Line, a collection of suburbs outside Philadelphia, Pennsylvania
• Main Line (Long Island Rail Road), Long Island City to Greenport
• Main Line (NJ Transit), formerly part of the Erie Railroad, Hoboken to Port Jervis

• Mainline (flight), an airline carrier's non-regional service
• A toll road system where all vehicles stop at various locations on the highway to pay a toll

• Midland Mainline, a defunct UK train operating company
• Mainline Freight, a UK railfreight company
• First South Yorkshire, formerly "Mainline" (1993-1998), a large bus operator in South Yorkshire, England

• BitTorrent (software), nicknamed mainline by developers denoting its official origins

• Mainline (Protestant) Christian church denominations

• McKenna Mendelson Mainline, a seminal Canadian blues band
• "Mainline", a song by KISS on their 1974 album Hotter Than Hell
• "Mainliner" is a short-length album by country influenced punk-rock band Social Distortion

• Speyer line, an isogloss in German linguistics

• Mainline, a slang verb meaning to inject heroin into the bloodstream