The Collaborative International Dictionary of English v.0.48:

Attorney-general \At*tor"ney-gen"er*al\, n.; (pl.
   Attorney-generals or Attorneys-general). (Law)
   The chief law officer of the state, empowered to act in all
   litigation in which the law-executing power is a party, and
   to advise this supreme executive whenever required.
   --Wharton.
   [1913 Webster]