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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 device firing DU projectiles using electro-magnetism. Real examples are too weak to match the infamous sniper weapon found in Quake.
Run a google search on "how to make a rail gun" to see some funny-ass shit!
by Gumba Gumba February 23, 2004
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A railgun is a single-turn coil consisting of the power source, rails, and armature. The armature is free to slide along the rails, the Lorentz force causes it to slide along the rails, away from the power source.

here is a real life example. not a toy or a video game...
by Jason Rollette September 19, 2003
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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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Long-ranged sniping weapon found in Quake II & III. It is a popular weapon for campers and people with good aiming skills or people who use aimbots.

The weapon looks like a big portable cannon, and creates a neat looking smoke trail to help locate campers.
He got railed by Jim from across the field and died instanly.
by Stephen U. January 29, 2004
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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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A type of weapon that is capable of discharging projectiles at unbelievably high velocities. In this day and age, a railgun is capable of firing a projectile with such velocity because it can use electromagnetism.

Railguns are the future of how nuclear weapons can be launched. Nuclear missiles usually undergo 4 phases, some of which have problems....but with a railgun, there are less required phases, and it's apparently inexpensive! And that's not even the scariest know how nuclear missiles are shot down? It's because nuclear missiles burn propellant, and interception technology can pinpoint it, and shoot down the incoming nuke with ease....however, with a railgun, the missile doesn't have to burn any propellant, and therefore it is INVISIBLE!!
Thus, railguns are capable of launching nuclear missiles that can be considered "invisible nuclear missiles"....the thought of that is VERY frightening. And yet, strategic and effective.
"The railgun technology was popularized not just by Quake, but particularly by Metal Gear Solid. Metal Gear Rex, in MGS, has a right arm that is a massive railgun."
by Dave April 16, 2004
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