dauphin

詳細解釋：

dau.phin

n.（名詞）
The eldest son of the king of France from 349 to 830.
王太子：從349到830期間法國國王的長子
Used as a title for such a nobleman.
用作這樣一個貴族的頭銜

來源：
Middle English
中古英文
from Old French [title of the lords of Dauphiné]
源自 古法文 [多芬貴族的稱號]
from Dalphin, Dalfin [a surname]
源自 Dalphin, Dalfin [姓]
from dalfin [dolphin (from the device on the family`s coat of arms)] * see dolphin
源自 dalfin [多芬（從家族盾形紋章的設計而得）] *參見 dolphin