The term "horse-flesh" refers to the meat of a horse. However, some might find the term humorous or offensive, and prefer to use a different synonym when referring to this type of meat. Some synonyms for "horse-flesh" include equine meat, horse meat, or simply just referring to it as meat from a horse. It's important to note that eating horse meat is not common in many cultures and can even be illegal in certain countries. As with any type of meat, it's important to ensure that proper preparation and cooking techniques are used to avoid any potential health risks.