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mainliner

[meyn-lahy-ner, -lahy-] /ˈmeɪnˌlaɪ nər, -ˈlaɪ-/
noun
1.
Slang. a person who mainlines.
2.
a person who belongs to a mainline group.
Origin of mainliner
1930-1935
1930-35, Americanism; mainline + -er1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for mainliner
  • The mainliner also requires a tourniquet of some sort to distend veins.

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