eunuch

Concise Oxford English Dictionary © 2008 Oxford University Press:
eunuch /ˈjuːnək/

▶noun

• 1 a man who has been castrated.

• 2 an ineffectual person: a nation of political eunuchs.

– origin OE, via L. from Gk eunoukhos, lit. ‘bedroom guard’, from eunē ‘bed’ + a second element rel. to ekhein ‘to hold’.