Wiktionary
vb. (present participle of mainline English)
Usage examples of "mainlining".
The economy went into overdrive, mainlining raw materials from the new worlds.
But the local addicts have been mainlining Brown so long they're suspicious of the other, and when the distributors do lay hold of the white stuff they have to step on it and tint it brown or it won't sell.
Not well exactly, not mainlining caffeine the way he was, but this was no time to equivocate or go into details.
Midge said about Chelly not mainlining, so I asked the doc about that.
It was mainlining on him, feeding itself, whatever it was, on his stares, once adoring - now horrified.
The police arrest a kid and uncover a whole series of offences, from mainlining on heroin to theft to get the cash to feed the habit.
That was horrible enough, but the autopsy said she had been mainlining heroin.