Jump To:

• main line
  main line

  noun

  a principal line or route of a railroad, as contrasted with a branch or secondary one.
• Main Line
  Main Line

  noun

  a fashionable residential district west of Philadelphia.

main line

¹ American  

noun

1. a principal line or route of a railroad, as contrasted with a branch or secondary one.

2. a principal highway.

3. 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.

---

Main Line ² American  

noun

1. a fashionable residential district west of Philadelphia.

2. any fashionable district where socially prominent people live.

---

main line British  

noun

1. railways

   1. the trunk route between two points, usually fed by branch lines

   2. ( as modifier )

      a main-line station

2. a main road

---

verb

1. slang (intr) to inject a drug into a vein

adjective

1. having an important position, esp having responsibility for the main areas of activity

Other Word Forms

Derived Forms

• Main-Line
  adjective
• mainliner
  noun
• Main-Liner
  noun

Etymology

Origin of main line

First recorded in 1835–45

Example Sentences

The play is a kind of pious froth about an attractive Main-Line Philadelphia society girl with a high and historic sense of her own importance.

From Time Magazine Archive

Related Words

• affluent
• booming
• comfortable
• flourishing
• fortunate
• rich
• robust
• wealthy
• well-heeled
• well-off
• well-to-do