Meaning

noun a large drinking bowl

originUncertain; perhaps from the Hebrew name of Joram, who “brought with him [to King David] vessels of silver, and vessels of gold, and vessels of brass” (Bible (King James Version), 2 Samuel 8:10; compare Jeroboam); or from Arabic جَرَّة (jarra, “earthen receptacle”).

Etymology from Wiktionary, CC BY-SA 3.0