From kata and ballo; to throw down -- cast down, lay.
see GREEK kata
see GREEK ballo
1. to cast down: τινα, passive, Revelation 12:10 Rec.; to throw to the ground, prostrate: passive, 2 Corinthians 4:9 (where the metaphor is taken from an athlete or combatant).
2. to put in a lower place: in the phrase θεμέλιον καταβάλλομαι, to lay (down) a foundation (Josephus, Antiquities 11, 4, 4; 15, 11, 3; Dionysius Halicarnassus, Antiquities 3, 69; others), Hebrews 6:1.