maple (n.)youdaoicibaDictYouDict[maple 词源字典]
c. 1300, from Old English mapultreow "maple tree," also mapolder, mapuldre, related to Old Norse möpurr, Old Saxon mapulder, Middle Low German mapeldorn, from Proto-Germanic *maplo-. There also was a Proto-Germanic *matlo- (cognates: Old High German mazzaltra, German maszholder), but the connection and origins are mysterious. Formerly with adjectival form mapelin (early 15c.; Old English mapuldern). Maple syrup attested from 1824, American English. The maple leaf is mentioned as the emblem of Canada from 1850.[maple etymology, maple origin, 英语词源]