twang (n.)youdaoicibaDictYouDict[twang 词源字典]
1550s, of imitative origin. Originally the sound of plucked bows and strings; extension to "a nasal vocal sound" is first recorded 1660s. The verb is first attested 1540s. Related: Twanged; twanging.[twang etymology, twang origin, 英语词源]