Usage: 2 forms in 3 verses
Form Translated As     In Verse(s)
διορύγματι ditch LXX.Exod.22.2
διορύγμασιν ditches LXX.Jer.2.34
her ditches LXX.Zeph.2.14

Liddell-Scott-Jones

διόρυγμα (diorugma) a ditch G:N-N

διόρυγμα-υγμα, ατος, τό,

cut, canal, as that across the isthmus of Mount Athos, [Refs 5th c.BC+]

__II digging through, house-breaking, [LXX]
__III hole made in wall by χελώνη, [Refs 4th c.BC+]
__IV siege-mine, [Refs 1st c.BC+]

LSJ Scripture Refs: LXX.Exod.22.2LXX.Jer.2.34