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1.
King Up(v.)-King Up means to rap,to spit over beats.there are only rappers who can KING UP.
"Get yo gun down man,buckle down,King Up motha'fucka"!
by Layzie Buck April 28, 2011
 
2.
KING UP (v.)-means to rap,to speak over beats or to freestyle.when someone is rapping over beats then we can say that he's Kingging up.
"Yo whats up RAKESH?ya know that I King up"?
by Layzie Buck April 23, 2011