type of gun that uses magnets and electricity to shoot out the "bullet" at super sonic speeds. mainly in sci-fi and games,but its real.
metal gear rex, the station guns in halo 2, and in star gate atlantis.
by jibus June 24, 2005
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A large type of cannon that uses 2 or more rails (hence the name) that are charged with electromagnetic energy. They electromagnets propel a projectile at high speeds over great distances. These weapons do get very hot after use and therefore require great cooling power.
The US Navy is currrently working on a project to equip a new type of Destroyer with rail guns.
by p8ntball4life79 July 06, 2006
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a badass type of rifle which fires an extremely fast projectile. Used by Arnold Schwarzenegger in the movie Eraser.
Jesus loves rail guns.
by smartkid June 09, 2005
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Means 2 things:

1) A weapon under development. Used against a giant robot clawing the Pyramids of Giza.
2) Ability that can fire straight electric shots, with anything iron-made as head.
3) A tomboyish woman who loves wearing boylegs, loves a frog mascot, has more than 20,000+ clones and fell in love to an unlucky bastard named Touma.
1) Rail Gun is a futuristic weapon.
2)Agent: I want a prototype weapon called a Rail Gun.
Ship Captain: That's classified.
Agent: Don't talk to me about CLASSIFIED!
3) A Rail Gun shot was deflected once again by the UNLUCKIEST BASTARD on Earth.
by Kay Tutan Tayo December 06, 2018
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When a butt plug is shot out of an anus due to ingesting cheap Mexican food and cocaine.
I took my girl to Taco Bell after the club last night. She must have been skiing in the bathroom, because when we got home she went off like a rail gun and put her but plug through my neighbor’s window.
by Comp B September 10, 2020
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