What is another name for a castrated lamb?

A castrated lamb is commonly referred to as a wether. This term specifically identifies male sheep that have been castrated, which is done to manage their temperament and make them easier to handle, especially within a flock setting. Castration can also improve the quality of meat, as wethers tend to have less aggressive behavior and typically put on weight more efficiently without the influences of male hormones.

The other terms listed do not apply to a castrated lamb. A ewe refers to a female sheep, while the term sheep is a generic term that encompasses all sheep regardless of sex or reproductive status. A sow specifically denotes a female pig, which does not relate to sheep or the classification of lambs. Thus, "wether" is the correct and specific term for a castrated male lamb.