A male who has been castrated, especially a male whose testicles have been removed before puberty in order to retain his boyish voice.

A male soprano or alto voice produced by castration of the treble singer before puberty, intended to conserve his voice; the singer.

Castrated; especially castrated prepubescently.

Having, using or containing the voice of a castrato (noun).

Originally composed for a castrato.

“Nowadays, either women or countertenors take the castrato roles.”