What does deface mean?
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From our dictionary:de•face
Pronunciation: (di-fAs'), [key]
—v.t., -faced, -fac•ing.
1. to mar the surface or appearance of; disfigure: to deface a wall by writing on it.
2. to efface, obliterate, or injure the surface of, as to make illegible or invalid: to deface a bond.