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1.
A place to be rocked and/or rolled. Especially in reference to a site of geographic or popular culture significance.
Matt: "We totally rocked the casba last night"

John: "Let's go to the casba tonight and get some serious E"
by King Wanka Dong September 02, 2009
 
2.
something you lock
LOCK THE CASBA!
by godberry king of the juice July 10, 2008