Usage: 2 forms in 7 verses
Form Translated As     In Verse(s)
περιστόμιον a cleft LXX.Job.15.27
cleft LXX.Exod.28.32LXX.Exod.39.23LXX.Exod.39.23LXX.Job.30.18LXX.Ezek.39.11
περιστομίου cleft LXX.Exod.28.32

Liddell-Scott-Jones

περιστόμιος (peristomios) a cleft G:N-N

περιστόμιος-ιος, ον,

round a mouth or aperture, [Refs 2nd c.AD+]

__II substantive περιστόμιοςιον, τό, mouth of a vessel, πίθου [Refs 2nd c.BC+]
__II.2 mouth-band, φορβειᾷ καὶ περιστομίοις [Refs 1st c.AD+]
__II.3 region of the epiglottis, [Refs 5th c.AD+]
__II.4 collar of a garment, [LXX]
__II.5 edge of a ravine,[LXX]

LSJ Scripture Refs: LXX.Job.30.18LXX.Ezek.39.11