The Collaborative International Dictionary of English v.0.48:

Procurator \Proc"u*ra`tor\, n. [L.: cf. F. procurateur. See
   Procure, and cf. Proctor. ]
   [1913 Webster]
   1. (Law) One who manages another's affairs, either generally
      or in a special matter; an agent; a proctor. --Chaucer.
      Shak.
      [1913 Webster]

   2. (Rom. Antiq.) A governor of a province under the emperors;
      also, one who had charge of the imperial revenues in a
      province; as, the procurator of Judea.
      [1913 Webster]

   Procurator fiscal (Scots Law), public prosecutor, or
      district attorney.
      [1913 Webster]

WordNet (r) 3.0 (2006):

procurator
    n 1: a person authorized to act for another [syn: proxy,
         placeholder, procurator]
    2: (ancient Rome) someone employed by the Roman Emperor to
       manage finance and taxes

Moby Thesaurus II by Grady Ward, 1.0:

68 Moby Thesaurus words for "procurator":
   MC, advocate, agent, alter ego, alternate, amicus curiae, attorney,
   attorney-at-law, backup, backup man, bailiff, barrister,
   barrister-at-law, butler, champion, counsel, counselor,
   counselor-at-law, croupier, curator, custodian, deputy, dummy,
   emcee, executive officer, exponent, factor, figurehead,
   friend at court, guardian, housekeeper, intercessor, landreeve,
   lawyer, legal adviser, legal counselor, legal expert,
   legal practitioner, legalist, librarian, lieutenant, locum,
   locum tenens, majordomo, master of ceremonies, mouthpiece,
   paranymph, pinch hitter, pleader, proctor, proxy, representative,
   sea lawyer, second in command, secondary, self-styled lawyer,
   seneschal, solicitor, stand-in, steward, substitute, surrogate,
   understudy, utility man, vicar, vicar general, vice, vicegerent



Bouvier's Law Dictionary, Revised 6th Ed (1856):

PROCURATOR, civil law. A proctor; a person who acts for another by virtue of
a procuration. Procurator est, qui aliena negotia mandata Domini
administrat. Dig 3, 3, 1. Vide Attorney; Authority.



Bouvier's Law Dictionary, Revised 6th Ed (1856):

PROCURATOR in rem suam. Scotch law. This imports that one is acting as
attorney as to his own property. When an assignment of a thing is made, as a
debt, and a procuration or power of attorney is given to the assignee to
receive the same, he is in such case procurator in rein suam. 3 Stair's
Inst. 1, Sec. 2, 3, &c.; 3 Ersk. 5, Sec. 2; 1 Bell's Com. B. 5, c. 2, s. 1,
Sec. 2.