What term is used to describe a male rabbit?

The term used to describe a male rabbit is "Buck." In the context of rabbit breeding and care, understanding the correct terminology is essential for proper identification and management of the animals. A buck is specifically the male counterpart in the rabbit species, while a doe refers to a female rabbit. The other options provided do not denote male rabbits; "lop" refers to a type of rabbit characterized by its floppy ears, and "loin" does not relate to rabbit terminology at all. Therefore, recognizing a buck as the male rabbit is a fundamental aspect of rabbit care and breeding knowledge.