Noah Webster
Urim
U'RIM, noun [Heb.] The Urim and Thummim, among the Israelites, signify lights and perfections. These were a kind of ornament belonging to the habit of the high priest, in virtue of which he gave oracular answers to the people; but what they were has not been satisfactorily ascertained.
First Occurrence in the Bible(KJV): Exodus 28:30