Top Definition
One Of Chicago's Earlier Prominent Street Gangs &
A Faction Of The EL RUKN'S
My uncle was an EL RUKN so when I got older I became a BLACKSTONE.
#gangs #chicago #illinois #street #people8
by JOSHUA CONLEY July 13, 2006
a common stone with grace and elegance.
it is gorgeous as it shines in the sun and sparkles on the beach.

also a common last name.
"look at that shiny rock!"
"you mean a blackstone?"
#rock #shiny #pearl #diamond #elegance
by meganmick December 19, 2009
a piece of poop that is actually undigested food
I ate so much celery that when I passed it, I crapped out a bunch of little blackstones!
#poop #digestion #food #crap #celery
by ManderPander September 12, 2006
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