castrate (v.)

"to deprive of the testicles, emasculate," 1610s (implied in castrated), back-formation from castration (q.v.), or from Latin castratus, past participle of castrare "to castrate, emasculate; to prune," supposedly from a noun *castrum "knife, instrument that cuts," from PIE root *kes- "to cut." The figurative sense "destroy the strength or vitality of" is attested earlier (1550s). Related: Castrating.

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Definitions of castrate from WordNet
castrate (v.)
deprive of strength or vigor;
Synonyms: emasculate
castrate (v.)
edit by omitting or modifying parts considered indelicate;
Synonyms: bowdlerize / bowdlerise / expurgate / shorten
castrate (v.)
remove the testicles of a male animal;
Synonyms: emasculate / demasculinize / demasculinise
castrate (v.)
remove the ovaries of;
Synonyms: alter / neuter / spay
castrate (n.)
a man who has been castrated and is incapable of reproduction;
Synonyms: eunuch