Ad·vo·cate 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.
 Note: ☞ In the English and American Law, advocate is the same as “counsel,” “counselor,” or “barrister.” In the civil and ecclesiastical courts, the term signifies the same as “counsel” at the common law.
 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.
    We have an Advocate with the Father.   --1 John ii. 1.
 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.