"An eunuch is a man that has been castrated either by choice or involuntarily to perform a specific social function"
https://cavemancircus.com/2020/04/15/how-does-a-eunuch-urinate/
"The first records of deliberate castration to produce eunuchs, from the Sumerian city of Lagash, date back some 4,000 years. In China, the eunuch system, which dates back almost as far, was firmly entrenched in the imperial culture and persisted through two dozen dynasties until 1911, when the last emperor was deposed."
https://www.psychologytoday.com/us/blog/how-we-do-it/201607/unmanned-unnatural-history-human-castration
"An eunuch (IPA: /ˈjuː.nək/) is a person born male who does not reproduce and may bear non-masculine or even effeminate characteristics, many of whom were castrated."
https://lgbt.fandom.com/wiki/Eunuch
"The word eunuch is only mentioned, by name, seven times in the KJV Bible. It is found twice in the Old Testament (Isaiah 56:3, Jeremiah 52:25) and five times in the New Testament (Acts 8:27, 34, 36, 38, 39). In the Old Testament, it is derived from a word that means to castrate and, by definition, can reference a chamberlain or minister of state (Strong's Concordance #H5631).
In the New Testament, eunuch is derived from a Greek word that means someone castrated and impotent (Strong's #G2135)."
https://www.biblestudy.org/question/what-is-a-eunuch.html
"12For there are some eunuchs, which were so born from their mother's womb: and there are some eunuchs, which were made eunuchs of men: and there be eunuchs, which have made themselves eunuchs for the kingdom of heaven's sake. He that is able to receive it, let him receive it."
https://biblehub.com/kjv/matthew/19.htm
What is a eunuch in the Bible?
https://www.gotquestions.org/eunuch-eunuchs.html