Dauphin/ˈdəʊfæ̃/ Definition 1 of 2Pro Tip 1/3Historical Title Dauphin was a title for French royalty, not in common use today. Louis XVII was known as the dauphin before the French Revolution. Pro Tip 2/3Royal Heir The term specifically refers to the heir apparent of the French throne. The dauphin prepared to ascend the throne of France. Pro Tip 3/3Cultural Reference The term is found in historical texts, films, and discussions about French history. The historical novel featured a dauphin fighting for his kingdom.