Source : Webster's Revised Unabridged Dictionary (1913)

Batter \Bat"ter\ (b[a^]t"t[~e]r), v. t. [imp. & p. p. {Battered}
   (-t[~e]rd); p. pr. & vb. n. {Battering}.] [OE. bateren, OF.
   batre, F. battre, fr. LL. battere, for L. batuere to strike,
   beat; of unknown origin. Cf. {Abate}, {Bate} to abate.]
   1. To beat with successive blows; to beat repeatedly and with
      violence, so as to bruise, shatter, or demolish; as, to
      batter a wall or rampart.

   2. To wear or impair as if by beating or by hard usage.
      ``Each battered jade.'' --Pope.

   3. (Metallurgy) To flatten (metal) by hammering, so as to
      compress it inwardly and spread it outwardly.

Source : WordNet®

battered
     adj 1: damaged by blows or hard usage; "a battered old car"; "the
            beaten-up old Ford" [syn: {beat-up}, {beaten-up}]
     2: damaged especially by hard usage; "his battered old hat"
     3: beaten repeatedly with heavy blows; "a battered child"; "the
        battered woman syndrome" [syn: {beaten}]