ἀσκέειν, περὶ τὰ νουσήματα, δύο, ὠφελέειν, ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
they broke down the bridge over the Anapus: P. τὴν τοῦ Ἀνάπου γέφυραν ἔλυσαν (Thuc. 6, 66).
P. and V. ζευγνύναι, P. γεφυροῦν (Plato).