n.
Pronunciation: ' do ̇ -f ə n, ' d ō -; ˌ d ō - ' fa n
Function: noun
Usage: often cap
Etymology: Middle English dolphin, from Anglo-French dolphyn, from Old French dalfin, title of lords of the Dauphiné, from Dalfin, a surname
Date: 15th century
: the eldest son of a king of France