eunuch /ˈjuː.nək/noun 4verb 2forms 3 noun4 •A castrated man.Semiramis was the first woman to invent eunuchs and women have had sympathy for them ever since; […] and women can tell them what they can't tell other men. — 1922 •(historical) Such a man employed as harem guard or in certain (mainly Eastern) monarchies (e.g. late Roman and Chinese Empires) as court or state officials.He shall be made a chaste and lustlesse Eunuch, And in my Sarell tend my Concubines — 1587 •(figurative) One that is ineffectual.behold the Eunuch of castrated thought — 2002 •A man who is not inclined to marry and procreate. verb2 •(old-fashioned) To castrate. •(figurative, old-fashioned) To render ineffectual. formseunuched · eunuching · eunuchs