a large flat serving dish or platter, a vessel of silver or gold used on the sacred table and in temple offerings
Every appearance of this word points to the same object: a broad, shallow dish for holding food or gifts. It is never an everyday household plate in the text. It belongs to the sanctuary, made of precious metal and counted among the holy furnishings.
Most of its uses come from one long passage, the tribal offerings at the dedication of the altar, where each of the twelve leaders brings the same set of gifts, and "one silver dish" heads the list every time. The others describe the vessels of the golden table that held the bread set before God, both when the table is built and when it is covered for travel.
Because the word names a specific temple vessel rather than a common dish, translators reach for different English words for it, from the old word "charger" to plainer choices like "dish", "platter", or "plate". The object itself stays the same throughout: a heavy, flat, open bowl for presenting food or an offering.