DAUPHIN

French king's eldest son (7)

Solution has appeared in 2 crosswords (0 across and 2 down):

• Quick crossword No 15,952 — 2021-06-22 23:00:11
  5D: Eldest son of a French king and heir to the throne (7)
• Quick crossword No 15,592 — 2020-04-27 23:00:51
  5D: French king's eldest son (7)