cas·trate 
(k
ăs
tr
āt
′)
tr.v. cas·trat·ed,
cas·trat·ing,
cas·trates 1. To remove the testicles of (a male); geld or emasculate.
2. To remove the ovaries of (a female); spay.
3. To deprive of virility or spirit; emasculate.
n. An individual who is incapable of reproduction as a result of removal, destruction, or inactivation of the gonads.
[Latin castrāre, castrāt-; see kes- in the Appendix of Indo-European roots.]
castrat·er, castra·tor n.
cas·tration n.