The word "eunuch" entered English in the 15th century from Latin eunuchus, borrowed from Greek eunoukhos. The Greek compound combines eunē (bed) with ekhein (to have, to hold, to keep), producing a word that literally means "bed-keeper" or "guardian of the bedchamber." This euphemistic compound describes the eunuch's primary function in ancient and medieval courts: guarding the private quarters — particularly the bedchambers — of the ruler's women.
The practice of castrating men for service in royal courts has deep roots across multiple civilizations. Ancient Mesopotamian, Egyptian, Chinese, and Indian courts all employed eunuchs, and the practice continued in the Ottoman Empire until its dissolution in 1922 and in the Chinese imperial court until 1912. The rationale was consistent: castrated men could serve in intimate proximity to the ruler's women without posing a sexual threat, making them ideal guardians of the harem.
But eunuchs were far more than harem guards. In the Byzantine Empire, eunuchs achieved extraordinary political power. Their inability to found dynasties — they could not father children — made them, paradoxically, more trustworthy in the eyes of emperors who feared ambitious courtiers founding rival royal lines. Eunuchs held the empire's highest administrative positions, commanded armies, and governed
In imperial China, the eunuch bureaucracy became a powerful political institution. The Ming dynasty (1368-1644) saw eunuchs wield influence rivalling that of the regular civil service. Zheng He, the famous 15th-century Chinese admiral who commanded treasure fleets across the Indian Ocean, was a eunuch. The conflict between eunuch factions and Confucian bureaucrats was a defining tension
The castrati of European music — male singers castrated before puberty to preserve their soprano or alto voices — represent a different application of the same physical modification. Italian opera from the 17th through 19th centuries featured castrati in leading roles, and some, like Farinelli, achieved fame and wealth comparable to modern pop stars. The practice was finally banned in Italy in 1870, though the last known castrato, Alessandro Moreschi, sang in the Vatican choir until 1913 and made recordings that survive today.