名詞 castrate:

1. a man who has been castrated and is incapable of reproduction
   同義詞：eunuch

動(dòng)詞 castrate:

1. deprive of strength or vigor
   同義詞：emasculate
2. edit by omitting or modifying parts considered indelicate
   同義詞：bowdlerize, bowdlerise, expurgate, shorten
3. remove the testicles of a male animal
   同義詞：emasculate, demasculinize, demasculinise
4. remove the ovaries of
   同義詞：alter, neuter, spay

1. A bullock is a castrated bull.
   閹牛是去勢(shì)的公牛。

cas.trate

v.tr.（及物動(dòng)詞）
cas.trat.ed,cas.trat.ing,cas.trates
To remove the testicles of (a male); geld or emasculate.
閹割：去除（雄性動(dòng)物的）睪丸；閹割或使無男子氣
To remove the ovaries of (a female); spay.
切除卵巢：去除（雌性動(dòng)物）的卵巢；切除卵巢
To deprive of virility or spirit; emasculate.
使無男子氣：使喪失精力或精神；使軟弱
n.（名詞）
An individual who is incapable of reproduction as a result of removal, destruction, or inactivation of the gonads.
無生殖能力的人或動(dòng)物：由于生殖器的去除、毀壞或無活動(dòng)能力而喪失生殖能力的個(gè)體

來源：
Latin castr3re castr3t- * see kes-
拉丁語 castr3re castr3t- *參見 kes-

【引伸】
cas.trater 或
cas.trator
n.（名詞）
castra.tion
n.（名詞）