Definition of Advocatus

In the civil law. An advocate; one who managed or assisted in managing another's cause before a judicial tribunal. Called also "patrons." Co.d. 2, 7, 14. But distinguished from casidicus. Id. 2, 0, 6.
—Advocatus diaboli. In ecolesiastical law. The devil's advocate; the advocate who argues against the canonization of a saint
—Advocati fisei. In the civil law. Advocates of the fiscj or revenue; fiscal advocates, (qui causam fisc egissent.) Cod. 2, 9, 1; Id. 2, 7, 13. Answering, in soine measure, to the king's counsel in English law. 3 Bl. Comm. 27.