D defs.my
Entry 1 sense Webster, 1913

Dauphin

/douf'-ĭn/ · Dau·phin · IPA /doʊˈfæ̃/
01 n. The title of the eldest son of the king of France, and heir to the crown. Since the revolution of 1830, the title has been discontinued.
  1. 1.
    The title of the eldest son of the king of France, and heir to the crown. Since the revolution of 1830, the title has been discontinued.