Dauphin

['dɔːfɪn] or ['dɔfɪn]

(noun.) formerly, the eldest son of the King of France and direct heir to the throne.

Editor: Rudolf--From WordNet

(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.

Inputed by Emilia

n. the name given to the eldest son of the king of France from 1349 down to 1830:—fem. Dau′phiness.

Edited by Kelsey