curdyoudaoicibaDictYouDict[curd 词源字典]
curd: [14] Curd began life as crud, a word which has survived in its own right. In the 15th century it underwent a process known as metathesis, by which the sounds r and u became transposed, producing curd. A derivative of this, dating from the 16th century, is curdle. The word’s ultimate ancestry is not known, although some consider that Gaelic gruth may be related.
[curd etymology, curd origin, 英语词源]
curd (n.)youdaoicibaDictYouDict
c. 1500, metathesis of crud (late 14c.), originally "any coagulated substance," probably from Old English crudan "to press, drive," from PIE root *greut- "to press, coagulate," perhaps via ancestor of Gaelic gruth (because cognates are unknown in other Germanic or Romance languages).