graffiti

/ษกษนษ™หˆfiหti/
noun
  1. 1

    Drawings or words drawn on a surface in a public place, usually made without authorization.

  2. 2

    Informal inscriptions, figure drawings, etc., as opposed to official inscriptions.

verb
  1. 1

    To mark a surface with such images.

Source: https://en.wiktionary.org/wiki/graffiti