mainline
Americanverb (used without object)
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to inject a narcotic, especially heroin, directly into a vein.
-
to use or enjoy something without restriction.
to mainline on TV movies.
verb (used with object)
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to inject (a narcotic, especially heroin) directly into a vein.
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to use, enjoy, or imbibe (something) without restriction.
mainlining coffee all day long.
adjective
Etymology
Origin of mainline
1935–40, v., adj. use of main line
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The train operator LNER, which runs the east coast mainline, has extended its advice to passengers not to travel between Edinburgh and Aberdeen as they "cannot guarantee" trains will operate until Friday at the earliest.
From BBC
Last year, we were mainlining magnesium, consuming creatine - a muscle boosting supplement that became mainstream, and we turned to AI chatbots for help with anything from a personalised training regime to a daily meal plan.
From BBC
The ubiquity of holiday songs also represents a rare monocultural music moment—even though listeners are spread across multiple streaming services and social-media platforms, many of them are mainlining the same tunes.
He used to present as a staid mainline Episcopalian, but now he denounces that church and speaks of being “mauled by demons.”
From Salon
There had been nothing going out on the West Coast mainline and hardly any announcements, she said.
From BBC
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
