bilbo (n.)youdaoicibaDictYouDict[bilbo 词源字典]
kind of sword noted for temper and elasticity, 1590s, from Bilbao, town in northern Spain where swords were made, in English Bilboa. The town name is Roman Bellum Vadum "beautiful ford" (over the Nervion River).[bilbo etymology, bilbo origin, 英语词源]