mainline definition

  • verb-transitive:
    • To inject (a drug, including heroin) into a significant vein.
    • to inject (illegal medicines) in to the vein.
  • verb-intransitive:
    • To inject a drug intravenously.
  • adjective:
    • Being in a principal or well-established position: the mainline churches.
    • normal, key or standard.
    • Of or related to the key path or line of a railway
    • Of or regarding a surface railroad as distinct from an underground, elevated or light train one.
  • verb:
    • To inject (a drug) straight into a vein.
    • inject into the vein

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  • Urban Dictionary for "mainline"
    • To inject a drug, generally heroin,…
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