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1.
A roundy is cat who knows his way around his city. Knows the people, the hot spots, the ballers, the hustlers, the tricks, everything. Typically a natural-born leader for his crew, people come to him for advice and to get questions answered.
"Yo, I'm new to these parts. Where's the best sub shop?"
"Ask that kid Felix over there, he's a real roundy."
by KingFelix September 14, 2006
 
2.
verb: to buy or use things that are less costly, sacrificing quality, to use things to the very last drop. When roundy'sing, one usually saves 32 cents on average.
Dane really Roundy's ed the shit out of his yogurt when he scraped the bottom of the container 17 extra times.
by The Kid3 April 13, 2008
 
3.
Slang term used for Ecstasy and other similar pills. Can also be called rounds or round ones
Chuck: Hey mate. You got the roundies?
Jonny: Fukn oath.
Chuck: Awesome.
by thehardkandyman February 28, 2010
 
4.
a luscious rearend or posterior that is round or spherical in shape
i want to tongue her roundy
by marlonmachine March 30, 2009
 
5.
A slang term for an 80mg pill of Oxycontin or oxycodone.
My friend and I just stole a roundy from my grandpa's medicine cabinet!
by Kevins Deli January 21, 2009
 
6.
A word used to describe something that is basically round...but not quite!
A football has a roundy shape.
by Delphynia February 06, 2010
 
7.
Nice, round, plump, firm, tits.
Dude, I want to stick it 'tween her roundies.