The definition of graffiti is writing, drawing, or other marks on a wall where it does not belong.
(noun)When someone scrawls a gang symbol on the side of a public building, this is an example of graffiti.
See graffiti in Webster's New World College Dictionary
plural noun sing. graffito
Origin: It, scribblings < graffio, a scratch < L graphium: see graft
See graffiti in American Heritage Dictionary 4
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