Usage: 2 forms in 4 verses
Form Translated As     In Verse(s)
μύλασ molars LXX.Job.29.17LXX.Ps.58.6LXX.Prov.30.14
μύλαι his molars LXX.Joel.1.6

Liddell-Scott-Jones

μύλη (mulē) a molar tooth G:N-F

μύλη-η, ,

mill: in [Refs 8th c.BC+], hand-mill turned by women, αἱ μὲν ἀλετρεύουσι μύλης ἔπι μήλοπα καρπόν [Refs 8th c.BC+]; μύλην στρέφειν, περιάγειν, περιφέρειν, περιελαύνειν, [Refs 2nd c.AD+]; μηδὲ μύλαν (Doric dialect) ἐνεῖμεν μηδὲ ὅλμον [Refs 4th c.BC+]: Cretan dialect accusative plural μύλανς [Refs]

__II nether millstone (the upper being ὄνος), [Refs 5th c.BC+]
__III knee-pan, [Refs 5th c.BC+]
__IV hard formation in a woman's womb, [Refs 5th c.BC+]
__V plural, molars, [LXX+1st c.AD+]: singular, of an ass's tooth, PMag. Lond.[Refs]
__VI ={μῶλυ}, [Refs 2nd c.AD+]. (Cf. Latin molo, Gothic malan 'grind', etc.)

LSJ Scripture Refs: LXX.Job.29.17