The Collaborative International Dictionary of English v.0.48:

Embroil \Em*broil"\, v. t. [imp. & p. p. Embroiled; p. pr. &
   vb. n. Embroiling.] [F. embrouiller; pref. em- (L. in) +
   brouiller. See 1st Broil, and cf. Imbroglio.]
   1. To throw into confusion or commotion by contention or
      discord; to entangle in a broil or quarrel; to make
      confused; to distract; to involve in difficulties by
      dissension or strife.
      [1913 Webster]

            The royal house embroiled in civil war. --Dryden.
      [1913 Webster]

   2. To implicate in confusion; to complicate; to jumble.
      [1913 Webster]

            The Christian antiquities at Rome . . . are so
            embroiled with ?able and legend.      --Addison.

   Syn: To perplex; entangle; distract; disturb; disorder;
        trouble; implicate; commingle.
        [1913 Webster]

WordNet (r) 3.0 (2006):

embroiled
    adj 1: deeply involved especially in something complicated;
           "embroiled in the conflict"; "felt unwilling entangled in
           their affairs" [syn: embroiled, entangled]