An affordable yet powerful muscle car produced by Plymouth from 1968 through 1974. Engine options included the 383 Mag, Six-Pack, and Hemi 426, while tranyy options included the 727 3spd auto and 4spd Hurst manual. One of the fastest muscle cars.
Jim's '69 Roadrunner 440 can easily outrun any ricer. Oh look, there he just won a race against a twin-turbo Honda.
by Mopar_Rules_Imports_Suck June 24, 2005

The sexual act of recieving a blow job while driving and then slamming the womans head into the horn twice and yelling out the window, "thats all folks."
Once she finished I grabbed her hair and slammed her into the steering wheel twice to pull a roadrunner. I forgot I was driving a semi with a air horn.
by Sir Mixnotsomuch February 21, 2004

by Roadrunner huncho June 02, 2017

by TheWiggidy April 09, 2004

In science and engineering when a system failure (preferably of a large experimental system due to simple design or operator error) is so spectacular that it is reminiscent of the Acme Corporation product failures from the Road Runner cartoon series.
So then this fifty million dollar rocket went totally Roadrunner and slammed into the desert in a thousand mile an hour fireball, all because he forgot to convert to metric.
by Zebidee55 October 05, 2009

an amazing basketball organization in scarborough, ontario, canada. the ages range from atoms to juveniles.
by roadrunna May 22, 2007
