ῥοϊσμός
From LSJ
γυναικόφρων γὰρ θυμὸς ἀνδρὸς οὐ σοφοῦ → it's an unwise man who shows a woman's spirit
English (LSJ)
ὁ, (ῥοΐζω) A = ὁ τῶν ἵππων ῥισμός (sic), Hsch.
Greek (Liddell-Scott)
ῥοϊσμός: ὁ, (ῥοΐζω) κολύμβημα, ἐπὶ ἵππων, «ροϊσμός· ὁ τῶν ἵππων» Ἡσύχ.