תֻּמִּים Tummîym

Hebrew · Strong's H8550 · pronounced toom-meem' · used 5 times in 5 verses

Meaning

perfections, i.e. (techn.) one of the epithets of the objects in the high-priest's breastplate as an emblem of complete Truth

In the King James Version: Thummim.

Derivation: plural of H8537 (תֹּם);

Exodus 28:30 And place the Urim and Thummim in the breastpiece of judgment, so that they will also be over Aaron’s heart whenever he comes before the LORD. Aaron will continually carry the judgment of the sons of Israel over his heart before the LORD.
Leviticus 8:8 Then he put the breastpiece on him and placed the Urim and Thummim in the breastpiece.
Deuteronomy 33:8 Concerning Levi he said: “Give Your Thummim to Levi and Your Urim to Your godly one, whom You tested at Massah and contested at the waters of Meribah.
Ezra 2:63 The governor ordered them not to eat the most holy things until there was a priest to consult the Urim and Thummim.
Nehemiah 7:65 The governor ordered them not to eat the most holy things until there was a priest to consult the Urim and Thummim.