Plural of H8537; perfections, that is, (technically) one of the epithets of the objects in the high priest’s breastplate as an emblem of complete Truth
KJV Usage: Thummim.
Brown-Driver-Briggs' Hebrew Definitions
Thummim = "perfection" 1. stones provided for the means of achieving a sacred lot a. used with the Urim, the will of God was revealed
Origin: pl. of H8537
Parts of Speech: Proper Name Masculine