Top Definition
The part of the buttocks which touch the surface you are sitting on; where the buttocks meet the thighs
The Buttom is where the buttocks meet the thighs, the bottom of the buttocks.
by Mu Shu Hugh April 16, 2009
1. Ones butt, or bottom. More polite than butt, but more rude than bottom.
2. An effing idiot or jerk. More mature than saying butt head.
1. I fell on my buttom and now it hurts.
2. Dude, your such a buttom.
by Black X February 19, 2009
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