pendragon (n.)youdaoicibaDictYouDict[pendragon 词源字典]
"Welsh warlord" (mainly known now in Arthurian Uther Pendragon), late 15c., title of a chief leader in war of ancient Britain or Wales, from pen "head" (see pen-) + dragon, which figured on the standard of a cohort.[pendragon etymology, pendragon origin, 英语词源]