walletyoudaoicibaDictYouDict[wallet 词源字典]
wallet: [19] Etymologically, a wallet may be something ‘rolled’ up. The word originally denoted a ‘traveller’s pack’; its application to a ‘small flat case for money and papers’ arose in 19th-century American English. It was probably borrowed from an Anglo-Norman *walet, which could have been formed from the prehistoric Germanic base *wal- ‘roll’ (source also of English wallow).
[wallet etymology, wallet origin, 英语词源]
wallet (n.)youdaoicibaDictYouDict
late 14c., "bag, knapsack," of uncertain origin, probably from an unrecorded Old North French *walet "roll, knapsack," or similar Germanic word in Anglo-French or Old French, from Proto-Germanic *wall- "roll," from PIE *wel- (3) (see volvox). Meaning "flat case for carrying paper money" is first recorded 1834, American English.