Dauphin (noun)

1. The eldest son of the king of France, traditionally designated as heir to the throne.
2. A prince or heir apparent to a throne or other hereditary position.

Origin:

The word 'dauphin' is derived from the old french 'dauphin' meaning 'dolphin', which was a symbol of sovereignty.

Examples:

1. The dauphin was the crown prince of France for many years.
2. The dauphin was expected to continue the work of his father when he became king.
3. The dauphin was a popular figure among the French people, known for his kindness and generosity.
4. The death of the dauphin was a great loss to the kingdom, as he was seen as a symbol of hope and stability.
5. The dauphin was trained from a young age to be a wise and just ruler.