raga (n.)youdaoicibaDictYouDict[raga 词源字典]
1788, from Sanskrit raga-s "harmony, melody, mode in music," literally "color, mood," related to rajyati "it is dyed," from PIE *reg- (3) "to dye" (cognates: Greek rhegos "blanket, rug").[raga etymology, raga origin, 英语词源]