The term "Thummim" refers to a set of objects mentioned in the Hebrew Bible, specifically associated with the Urim and Thummim. These items were used by the ancient Israelites for divination or seeking guidance from God. They were typically kept in the breastplate of the High Priest and played a role in making important decisions. The exact nature of the Thummim remains unclear, with various interpretations suggesting they could be stones or other forms of lots. Their primary function was to provide answers to questions posed by the leaders of Israel, helping them discern divine will in critical situations.