Advocate

n.
  1. One who pleads the cause of another. Specifically: One who pleads the cause of another before a tribunal or judicial court; a counselor.
  2. One who defends, vindicates, or espouses any cause by argument; a pleader; as, an advocate of free trade, an advocate of truth.
  3. Christ, considered as an intercessor.
  4. Faculty of advocates (Scot.),
    the Scottish bar in Edinburgh.
    Lord advocate (Scot.),
    the public prosecutor of crimes, and principal crown lawyer.
    Judge advocate .
    See under Judge.

v. t.
  1. To plead in favor of; to defend by argument, before a tribunal or the public; to support, vindicate, or recommend publicly.

v. i.
  1. To act as advocate.