The Collaborative International Dictionary of English v.0.48:

Personify \Per*son"i*fy\, v. t. [imp. & p. p. Personified; p.
   pr. & vb. n. Personifying.] [Person + -fy: cf. F.
   personnifier.]
   1. To regard, treat, or represent as a person; to represent
      as a rational being.
      [1913 Webster]

            The poets take the liberty of personifying inanimate
            things.                               --Chesterfield.
      [1913 Webster]

   2. To be the embodiment or personification of; to
      impersonate; as, he personifies the law.
      [1913 Webster]

WordNet (r) 3.0 (2006):

personify
    v 1: invest with or as with a body; give body to [syn: body,
         personify]
    2: represent, as of a character on stage; "Derek Jacobi was
       Hamlet" [syn: embody, be, personify]
    3: attribute human qualities to something; "The Greeks
       personated their gods ridiculous" [syn: personify,
       personate]