Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
ιλύοσ of slime LXX.Ps.40.2
ιλύν slime LXX.Ps.69.2

Liddell-Scott-Jones

ἰλύς (ilus) slime G:N-F

ἰλύς [], ύος, ,

mud, slime, τεύχεα.. κείσεθ᾽ ὑπ᾽ ἰλύος κεκαλυμμένα [Refs 8th c.BC+]; of alluvial soil, [Refs 5th c.BC+]

__2 dregs, sediment, [Refs]; of wine, [Refs 4th c.BC+]
__3 impurity, αἵματος [Refs 8th c.BC+] [same place]] (Cf. Russ. il, Polish it 'mud', 'potter's clay'.)