words or drawings, especially humorous, rude, or political, on walls, doors, etc. in public places

中文解释

（尤指写画在公共场合的墙或门上的幽默的、粗野的或政治性的）涂鸦，涂画 The subway walls are covered with graffiti. 过街地道的墙上满是涂鸦。