Grave loutrophore from "Anacharsis, son of Archathos", Lemnos, late classical period, 5-4th century BC. Marble, Inv. 595T

Wikipedia: A loutrophoros (Ancient Greek: λουτροφόρος; Greek etymology: λουτρόν/loutron and φέρω/pherō, English translation: "bathwater" and "carry") is a distinctive type of Greek pottery vessel characterized by an elongated neck with two handles. The loutrophoros was used to carry water for a bride's pre-nuptial ritual bath, and in funeral rituals, and was placed in the tombs of the unmarried.[1] The loutrophoros itself is a motif for Greek tombstones, either as a relief (for instance, the lekythos on the Stele of Panaetius) or as a stone vessel.