Note: Do not rely on this information. It is very old.
Castration
Castration, the removal of the testicles from the male animal. It is a common practice to castrate certain of the domestic animals, and special names are applied to animals in which the operation has been performed. In the case of the horse the term gelding is used; in that of the bull, bullock or steer; and wether is the name given to a castrated ram.