ĕpīzygis: ĭdis, f., = ἐπιζυγίς,I a pin at the hole of the balista, to keep the cord, when drawn through, in its place, Vitr. 10, 17.
ĕpĭzўgis, ĭdis, f., levier de torsion dans la catapulte : Vitr. Arch. 10, 11, 4.