Usage: 3 forms in 15 verses
Form Translated As     In Verse(s)
χώματοσ embankment LXX.Job.14.19LXX.Job.17.16LXX.Job.20.11
χώματι an embankment LXX.Job.22.24LXX.Dan.12.2
embankments LXX.Exod.8.17
χώμα an embankment LXX.Job.28.6LXX.Ezek.21.22LXX.Hab.1.10
embankment LXX.Exod.8.16LXX.Exod.8.17LXX.Neh.4.2
embankments LXX.Isa.25.2
for an embankment LXX.Josh.8.28
their embankment LXX.Isa.34.7

Liddell-Scott-Jones

χῶμα (chōma) an embankment G:N-N

χῶμα, ατος, τό,

(χόω, χώννυμι) earth thrown up, bank, mound, thrown up against the walls of cities to take them, αἵρεε τὰς πόλιας χώμασι [LXX+5th c.BC+]

__2 dyke to hinder a river from overflowing, [Refs 5th c.BC+]; βασιλικὸν χ. Wilcken [Refs 2nd c.BC+]; δημόσιον χ. [Refs 1st c.AD+]
__3 dam, [Refs 5th c.BC+]
__4 mole or pier, carried out into the sea, jetty, [Refs 4th c.BC+]
__5 promontory, spit of sand, [Refs 4th c.BC+]
__II sepulchral mound, [χῶμα μὴ χοῦν ὑψηλότερον πέντε ἀνδρῶν ἔργον 5th-6th c.BC: Plato Philosophus “Leges” 958e. ">Refs 5th c.BC+]
__III mass of soil in which roots are found, conjecture in [Refs 4th c.BC+]
__IV heap of rubbish, ruin, [LXX+4th c.AD+]
__V τὸ χ. τῆς γῆς the dust of the earth, [LXX]

LSJ Scripture Refs: LXX.Ezek.21.22*LXX.Hab.1.10LXX.Josh.8.28LXX.Isa.25.2LXX.Exod.8.16