καρυδόω
From LSJ
ψυχῆς ἀγῶνα τὸν προκείμενον πέρι δώσων → to stand the appointed trial for his life, to stand the appointed struggle for life and death
English (LSJ)
castrate a horse, and καρύδωσις, εως, ἡ, castration, Hippiatr.99.
German (Pape)
[Seite 1331] ein Pferd kastriren, u. καρύδωσις, ἡ, das Verschneiden, Hippiatr.
Greek (Liddell-Scott)
καρυδόω: εὐνουχίζω ἵππον, καρύδωσις, εως, ἡ, εὐνουχισμός, Ἱππιατρ. 239, 33.