v. t. [ imp. & p. p. Defaced p. pr. & vb. n. Defacing. ] [ OE. defacen to disfigure, efface, OF. desfacier; L. dis- + facies face. See Face, and cf. Efface. ] 1. To destroy or mar the face or external appearance of; to disfigure; to injure, spoil, or mar, by effacing or obliterating important features or portions of; as, to deface a monument; to deface an edifice; to deface writing; to deface a note, deed, or bond; to deface a record. “This high face defaced.” Emerson. [ 1913 Webster ]

So by false learning is good sense defaced. Pope. [ 1913 Webster ]

2. [ Cf. F. défaire. ] To destroy; to make null. [ Obs. ] [ 1913 Webster ]

[ Profane scoffing ] doth . . . deface the reverence of religion. Bacon. [ 1913 Webster ]

For all his power was utterly defaste [ defaced ]. Spenser.

Syn. -- See Efface. [ 1913 Webster ]

adj. having the external appearance impaired, usually deliberately.
Syn. -- marred. [ WordNet 1.5 ]

n. 1. The act of defacing, or the condition of being defaced; injury to the surface or exterior; obliteration. [ 1913 Webster ]

2. That which mars or disfigures. Bacon. [ 1913 Webster ]

n. One who, or that which, defaces or disfigures. [ 1913 Webster ]