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mainliner: Meaning and Definition of

main•lin•er

Pronunciation: (mān'lī"nur, -lī'-), [key]
— n.
  1. a person who mainlines.
  2. a person who belongs to a mainline group.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
main line mainly
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