Usage: 3 forms in 5 verses
Form Translated As     In Verse(s)
ψόαν flank LXX.2Sam.2.23LXX.2Sam.3.27LXX.2Sam.20.10
ψόαισ flank LXX.Lev.3.9
ψόαι my flanks LXX.Ps.38.7

Liddell-Scott-Jones

ψόα (psoa) a flank G:N-F

ψόα

or ψύα, , more frequently in plural ψόαι or ψύαι, muscles of the loins (compare ἀλώπηξ IV), [ψόας),compare “Oss.” 18 (ψύαν), “Morb.Sacr.” 3 ">Refs 5th c.BC+] (ψύην), and [ψόαι [prev. author] “SD” 2.3)">LXX+4th c.BC+]; accusative plural ψοιάς (variant{ψύας},{ψυάς}) Polybus cited in [ψόα LXX “Le.” ">LXX+4th c.BC+] [prev. cited] and three times in codex Vat. of [Refs 2nd c.AD+]; ψύαι [ψόας">Refs] in Bilabel Ὀψαρτ. [Refs 5th c.AD+]: the word in all its spellings is declared un-Attic by [Refs 3rd c.BC+] [same place]; but in an Epic Fragm. in [Refs 2nd c.AD+]

LSJ Scripture Refs: LXX.Lev.3.9LXX.2Kgs.2.23LXX.Ps.37.8*