gelding/ˈɡɛldɪŋ/EtymologyFrom Middle English geldyng (“eunuch”), from Old Norse geldingr (“wether, eunuch”), from gelda (“to castrate”). By surface analysis, geld (“to castrate”) + -ing (diminutive suffix).nounA castrated male horse.“Mr. Free also owned restaurants and bred horses. His bay gelding, Packett's Landing, won almost $800,000 in his five-year career in the late 1980's and early 1990's.”Any castrated male animal.