noun
A castrated human male.
(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.
(in translations of ancient texts) A man who is not inclined to marry and procreate.
(figurative) One that is ineffectual.
verb
(transitive, dated) To castrate.
(figurative, transitive, dated) To render ineffectual.