κατασείειν

From LSJ

δι' ἐρημίας πολεμίων πορευόμενος → he marched on without finding any enemy, his route lay through a country bare of enemies

Source

Greek > English (Woodhouse Verbs Reversed)

(see also κατασείω): batter down, shake down

Lexicon Thucydideum

quassare, to shake, shatter, 2.76.4 (de machina concerning the engine).