graf·fi·to /grəˈfi(ˌ)to, græ, grɑ-/
  亂畫,粗糙彫刻
  Graf·fi·to n.
  1. Art Production of decorative designs by scratching them through a surface of layer plaster, glazing, etc., revealing a different-colored ground; also, pottery or ware so decorated; -- chiefly used attributively.
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  graffito
       n : a rude decoration inscribed on rocks or walls [syn: graffiti]
       [also: graffiti (pl)]