Liddell-Scott-Jones

ἐπιμύλιος (epimulios) an upper millstone ^G:A

ἐπιμύλιος-ιος, ον,

at or in the mill, epithet of Artemis, [Refs]

__2. of a millstone, κλάσμα Vetus Testamentum Graece redditum “Judges” 9.53 (assuming variant).
__II. as substantive,
__II.1. ἐπιμύλιον, τό, the upper millstone,[LXX]
__II.2. ἐπιμύλιος (i.e. ω᾽δή), ἡ, song sung while grinding, Tryphoap.[Refs 5th c.AD+]

_{LSJ Scripture Refs: LXX.Deut.24.6}