Approver

n.	1.	One who approves. Formerly, one who made proof or trial.
	2.	An informer; an accuser.
	3.	(Eng. Law) One who confesses a crime and accuses another. See 1st Approvement, 2.
	1.	(Eng. Law) A bailiff or steward; an agent.

Noun

1.

approver - an authority with power to approve

APPROVER, Engl. crim. law. One confessing himself guilty of felony, and approving others of the same crime to save himself. Crompt. Inst. 250 3 Inst. 129.

approve, authority, O.K., okay, sanction