look up any word, like trill:
 
1.
the top part of a womens genitalia.
Mollie asked her boyfriend to play with her rollerball at the top of her quim.
by rrrrrodge January 17, 2012
 
2.
a game you play in a gym... kinda like volleyball... you can only keep it "Rolling" on the floor... if it goes above the persons knees it is the other teams serves... it a great way to get your knuckels all busted up
We played rollerball today at practice.
by AngelBabie89007 March 30, 2004