The Collaborative International Dictionary of English v.0.48:

Lacerate \Lac"er*ate\, Lacerated \Lac"er*a`ted\, p. a. [L.
   laceratus, p. p.]
   1. Rent; torn; mangled; as, a lacerated wound.
      [1913 Webster]

            By each other's fury lacerate         --Southey.
      [1913 Webster]

   2. (Bot. & Zool.) Jagged, or slashed irregularly, at the end,
      or along the edge.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

lacerated \lacerated\ adj.
   torn roughly; -- of skin.

   Syn: mangled, torn.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Lacerate \Lac"er*ate\, v. t. [imp. & p. p. Lacerated; p. pr. &
   vb. n. Lacerating.] [L. laceratus, p. p. of lacerare to
   lacerate, fr. lacer mangled, lacerated; cf. Gr. ? a rent,
   rending, ? to tear; perh. akin to E. slay.]
   To tear; to rend; to separate by tearing; to mangle; as, to
   lacerate the flesh. Hence: To afflict; to torture; as, to
   lacerate the heart.
   [1913 Webster] Lacerate

WordNet (r) 3.0 (2006):

lacerated
    adj 1: irregularly slashed and jagged as if torn; "lacerate
           leaves" [syn: lacerate, lacerated]
    2: having edges that are jagged from injury [syn: lacerate,
       lacerated, mangled, torn]