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1.
The act of fucking the living shit out of something or someone, preferably a female.
Damn dude, I fuckin' railed that ho all night.
by Anonymous December 28, 2002
 
2.
To fuck in a rough, hard manner.
I railed that bitch so hard, when I shot it, it fuckin' came out her nose.
by Doug O. December 28, 2002
 
3.
Fucking a person within an inch of her life. Or just as hard.
I wanna rail the fuck out of jackie rust.
by like I'm gonna tell you. seriously November 06, 2004
 
4.
To have wild wild sex. Usually pinning someone up to a wall and given'r. Suggesting a women is on the rails of a train track and you keep pulling her into the station.
"Just fuckin railed her"
by Poopybumm February 25, 2008
 
5.
To have snorted something.
Dude, that shit we railed last night was good!
by Mr. X February 20, 2005
 
6.
To slam, or "bang" the sexual organ out of the opposite sex.
Jake railed Christina every Thanksgiving.
by JGreeneeee April 25, 2006
 
7.
When you "rail" something that usually means that you cut up something, like a pill, into a fine powder and then you snort it.
Fuck man, I can't beleive you railed a quadstack in one go!
by NorCal potsmoker March 18, 2009