mainline

(n) The front-running leader(s) of an industry; not the imitation spin-offs. Reserved for the select few whom others try to imitate albeit never successfully. If you are not mainline you are hopeless and should probably just quit what you do, now.

(adj) Describing an action that would only be done by someone/something that is mainline.

Guy 1: Why does that guy drive such a shitty old car if he's a lawyer?

Guy 2: He must not be mainline. If he were, he would drive a BMW 5 Series.

*******
Guy 1: Lebron James is overrated.

Guy 2: Seriously?! He is the most mainline basketball player of this generation.

by Reacharoundartist May 22, 2010

mainline

Weaponized wireless telepathic communications and informations system used by covert US military-intelligence in the Targeted Individual program.

The military had their own voice-to-skull...they called it the mainline... it was voice-to-skull.

by Medicine Owl February 8, 2023

Rock the mainline

To get "high" on heroine through the means of an introvenus-needle. I.e. - Shooting up.

Addict: Yo, dog... Yo got the shit to lemme rock tha mainline?
Dealer: Fo' sizzle ma nizzle, that'll be fiddy.

by God May 20, 2003

Mainline

A person's main significant other, even though they may be dating several people at once.

"I got a lot of chicks, I ain't gotta lie. But you keep it real, so you my mainline." - Ray Vicks

by BRNOLA July 12, 2009

McAirline

An ultra-low fare passenger air carrier ie, Spirit or Swoop, it offers such no frills amenities as all-economy seats. They may or may not offer wi-fi, and if you get hungry or thirsty then you have to buy your overpriced chips and soda.

McAirlines are like McDonald’s, offering cheap stuff that serve their purpose to the widest customer base.

I flew with a McAirline from Toronto to Calgary early this morning. The seats were cramped together and I had to pay for my chips and Diet Coke, but I arrived in one piece. That’s good enough for me.

by The Real Canadian April 28, 2023

McAirliner

A private jet that is just a smaller version of an airliner. Similar to how a small mansion is called a McMansion.

That Dassault Falcon 10X is a McAirliner because it can seat up to 19 passengers.

by Licensed_Nerd October 26, 2024

mirline

Most cutest beautiful girl ever. She’s beautiful inside out. She’s literally perfect inside and out and has the most beautiful angelic voice ever. I love her.

Mirline is beautiful. I want her

by Httg November 21, 2021