ῥυτίδωσις
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)
εως, ἡ, A wrinkling, contraction, e.g. of the eye, Gal.10.171 (pl.), Ruf.Fr.78.
German (Pape)
[Seite 854] ἡ, das Runzeln, Medic.
Greek (Liddell-Scott)
ῥῠτίδωσις: ἡ, τὸ ῥυτιδοῦσθαι, ἡ συστολή, σμίκρυνσις, π.χ. τοῦ ὀφθαλμοῦ, Γαλην. τ. 10, 58, πρβλ. ῥύπωσις.