definitions
  • synonyms

main line

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SEE MORE SYNONYMS FOR main line ON THESAURUS.COM

noun

a principal line or route of a railroad, as contrasted with a branch or secondary one.
a principal highway.
Slang.
  1. a prominent and readily accessible vein of the body that may be used for a narcotic's injection.
  2. the act of mainlining.

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RELATED WORDS

Nearby words

main diagonal, main drag, main entry, main gauche, main idea, main line, main man, main market, main memory, main plane, main royal mast

Origin of main line

First recorded in 1835–45

Definition for main line (2 of 2)

Main Line


noun

a fashionable residential district west of Philadelphia.
any fashionable district where socially prominent people live.
Related formsMain-Line, adjectiveMain-Lin·er, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for main line

British Dictionary definitions for main line

main line


noun

railways
  1. the trunk route between two points, usually fed by branch lines
  2. (as modifier)a main-line station
US a main road

verb mainline

(intr) slang to inject a drug into a vein

adjective mainline

having an important position, esp having responsibility for the main areas of activity
Derived Formsmainliner, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for main line

main line


n.
Online Etymology Dictionary, © 2010 Douglas Harper