The epinetron (Greek: ἐπίνητρον, pl.: epinetra, ἐπίνητρα; "distaff"); Beazley also called them onoi, sg.: onos) was a shape of Attic pottery worn on the thighs of women during the preparation of wool, not unlike a thimble for the thigh. Decorated epinetra were placed on the graves of unmarried girls, or dedicated at temples of female deities.
Because of the strong association between wool-working and the Ancient Greek ideal of women and wives—as in the case of Penelope weaving in the Odyssey—it is a shape associated with the wedding.