Indigenous tree of Ohio "the Buckeye State" whose nut is poisonous. Also the mascot of The Ohio State University. Is a term used for anyone attaching themselves to The Ohio State University's athletics as a fan, student or athlete.
I was born a Buckeye and I will die a Buckeye. And the way the Buckeyes have been playing, I'm gonna die a Buckeye quicker than I thought!
by Suz April 12, 2005
Get the buckeye mug.
A team that gets owned by the Florida Gators, in two major national championships in a row.
"Those buckeyes got fucked up by Florida again."
by Preston Brown April 10, 2007
Get the buckeye mug.
The anal sex equivalent of a "cherry"--anal virginity.
"I've been trying to talk Kiki into giving up her buckeye for months now."

or:

"I finally popped Brad's buckeye the other night."

or:

"Every time I see a headline in the sports pages about "losing Buckeyes" I laugh my ass off."
by BuckeyeFan April 20, 2009
Get the buckeye mug.
Usually found on the WV Turnpike in a convoy of mini-vans traveling 45 MPH in a 70 MPH zone(It is a scientific fact that buckeye's are the worst drivers in the world). The typical family has all contents of home tied to the top or strapped to some home made bracket on the back of the vehicle. Most sightings include 10-50 children in the vehicle with all kinds of crap piled up around the windows obstructing the drivers view. This could be why they are always in the passing lane.
What's the definition of a buckeye?

"A Worthless Nut"
by The Anti-Buckeye! December 24, 2005
Get the buckeye mug.
the act of rubbing peanut butter all over your penis, ramming it up someone's ass, and then making them eat it.
by MCOL12 November 24, 2009
Get the buckeye mug.
step 1)have anal sex until the person loses control of thier bowels,
step 2) the male ejaculates and the feces and semen form a gooey rechid substance.
step 3) the male seals the female's eyes shut with this substance using his dick
step 4) he slams his penis against her forehead leaving a huge brown mooseprint
--also called the chocolate peanut butter buckeye
guy: hey man last night i gave that girl a buckeye...
friend: you're a sick motherfucker i hope you washed your dick
by fulltilt monkey August 14, 2007
Get the buckeye mug.
A warning call made after someone farts, accompanied by raising one hand vertically and placing the thumb upon the forehead as a means of immunity. The last person to call "buckeye" and complete the hand gesture is said to have "ate it". Another way of achieving fart amnesty is by calling gas cap/gas tank/stovepipe and walking to the nearest gas cap, etc. and touching that object.
(Fart noise) BUCKEYE! (by multiple people) You ate it!
by Siiih June 1, 2006
Get the buckeye mug.