Onos

The epinetron (Greek: ἐπίνητρον, plural: epinetra, ἐπίνητρα); Beazley also called them onoi, singular: onos) was an Attic female pottery object, not a vessel. It was used by Attic women whilst weaving to prevent grease from the wool from spoiling their clothes. More ornamental epinetrons were placed on the graves of unmarried girls, or dedicated at temples, usually to the goddess Athena.