ξένος ὢν ἀκολούθει τοῖς ἐπιχωρίοις νόμοις → as a foreigner, follow the laws of that country | when in Rome, do as the Romans do
Of a military position, strong: P. and V. ὀχυρός; see strong.
Of an argument: P. ἀνέλεγκτος.