A castrated man employed as a harem attendant or as a functionary in certain Asian courts.
A man or boy whose testes are nonfunctioning or have been removed.
Informal An ineffectual, powerless, or unmasculine man.
[Middle English eunuk, from Latin eunūchus, from Greek eunoukhos : eunē, bed + -okhos, keeping (from ekhein, to keep; see segh- in Indo-European roots).] eu'nuch·ism n.
Word History: The word eunuch does not derive, as one might think, from the operation that produced a eunuch but rather from one of his functions. Eunuch goes back to the Greek word eunoukhos, "a castrated person employed to take charge of the women of a harem and act as chamberlain." The Greek word is derived from eunē, "bed," and ekhein, "to keep." A eunuch, of course, was ideally suited to guard the bedchamber of women.