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1.
is a slang term used by the present day "gangstas" meaning an acknowledgment of ur knowledge of something belonging to them of some worth or "coolness"
Tommy walks into the the local barbershop and his friend Billy says "nice sneakers"!!! Tommy replies with "U kno"
by D Brooks August 24, 2005
 
2.
short pharse to use when you dont have anything better to say or you dont wanna say whats fo real
"How many people have you fucked?" "U KNO!"
by clow July 13, 2003
 
3.
is a slang term used by the present day "gangstas" meaning an acknowledgment of ur knowledge of something belonging to them of some worth or "coolness"
Tommy walks into the the local barbershop and his friend Billy says "nice sneakers"!!! Tommy replies with "U kno"
by D Brooks August 23, 2005