currantyoudaoicibaDictYouDict[currant 词源字典]
currant: [14] Etymologically, currants are grapes from ‘Corinth’. In the Middle Ages Corinth, in Greece, exported small dried grapes of particularly high quality, which became known in Old French as raisins de Corinthe ‘grapes of Corinth’. This phrase passed via Anglo-Norman raisins de corauntz into Middle English as raisins of coraunce. By the 16th century, coraunce had come to be regarded as a plural form, and a new singular was coined from it – at first coren, and then in the 17th century currant.

In the late 16th century, too, the name was transferred to fruit such as the blackcurrant and redcurrant, under the mistaken impression that the ‘dried-grape’ currant was made from them.
[currant etymology, currant origin, 英语词源]