κατασείειν

From LSJ

ξένος ὢν ἀκολούθει τοῖς ἐπιχωρίοις νόμοις → as a foreigner, follow the laws of that country | when in Rome, do as the Romans do

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).