retrogressus
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
Latin > English (Lewis & Short)
rē̆trōgressus: ūs, m. id.,
I a retrograde movement, retrogression of the sun (post-class.), Macr. S. 1, 17.
