To apply (something) to a surface in hasty or crude strokes.
To paint (a picture, etc.) in a coarse or unskilful manner.
Excrement or clay used as a bonding material in construction.
A crude or amateurish painting.
A soft coating of mud, plaster, etc.
To mark a surface with such images.
Drawings or words drawn on a surface in a public place, usually made without authorization.
Informal inscriptions, figure drawings, etc., as opposed to official inscriptions.