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.
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?"
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!
by ManderPander September 12, 2006
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.