Bullock heart is a term that commonly refers to the heart of a castrated male bovine. However, there are a variety of synonyms that can be used to describe this organ. Some examples include ox heart, steer heart, and cow heart. Other terms that may be used include bovine heart or simply beef heart. Ultimately, the terminology used will depend on the context in which it is being used and the preference of the person speaking or writing. While bullock heart may be the most common term in certain circles, there are plenty of alternatives that are equally valid.