Trier

n.	1.	One who tries; one who makes experiments; one who examines anything by a test or standard.
	2.	One who tries judicially.
	3.	(Law) A person appointed according to law to try challenges of jurors; a trior.
	4.	That which tries or approves; a test.

Noun	1.	trier - one (as a judge) who examines and settles a case
	2.	trier - one who tries Synonyms: attempter, essayer

adjudicate, hear, judge, jurisprudence, jurist, justice, law, magistrate, try