ἀναστείχω
From LSJ
οἵτινες πόλιν μίαν λαβόντες εὐρυπρωκτότεροι πολύ τῆς πόλεος ἀπεχώρησαν ἧς εἷλον τότε → after taking a single city they returned home, with arses much wider than the city they captured
English (LSJ)
A go up, ἐπὶ γαῖαν Opp.H.1.422; ascend, κολώνην ib.4.65.
German (Pape)
[Seite 209] hinaufschreiten, Opp. H. 1, 422. 4, 65.