eunuch
/ˈjuːnək/noun
1- a man who has been castrated, especially (in the past) one employed to guard the women's living areas at an oriental court阉人（尤指过去东方国家宫廷中的太监, 宦官）。
1.1
- an ineffectual person无能者：
a nation of political eunuchs.
一个由政治上昏庸无能者当道的国家。
词源
Old English, via Latin from Greek eunoukhos, literally 'bedroom guard', from eunē 'bed'+a second element related to ekhein 'to hold'.