Definitions for mainlineˈmeɪnˌlaɪn, -ˈlaɪn
This page provides all possible meanings and translations of the word mainline
inject into the vein
"She is mainlining heroin"
To inject (a drug) directly into a vein.
normal, principal or standard.
Of or pertaining to the principal route or line of a railway
Of or pertaining to a surface railway as distinct from an underground, elevated or light rail one.
Origin: * main + line
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