A rude decoration inscribed on rocks or walls

• Wall scribblings
• Wall or sidewalk scrawlings
• "American ___" (1973 coming-of-age film starring Ron Howard)
• Writings on a bridge, e.g
• Scrawl on a wall
• Good artist rejected argument current in street art

Wikipedia Word definitions in Wikipedia
Graffiti (plural of graffito : "a graffito", but "these graffiti") are writing or drawings that have been scribbled, scratched, or painted illicitly on a wall or other surface, often within public view. Graffiti range from simple written words to elaborate ...

WordNet Word definitions in WordNet
See graffito