The term “bovine” is an adjective used to describe members of the species Bos taurus (European cattle) or Bos indicus (Asian cattle). It is derived from the genus name “Bos.” While some people may use “bovine” as a noun, it is considered lazy and poor grammar, as there are specific sex-specific terms for cattle such as cow, steer, bull, calf, or heifer. Using “bovine” as a noun is more commonly seen in American usage. In my country, if the sex of a single animal of the bovine species is unknown, it would typically be referred to as a “cattle-beast.”