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.
Entries linking to twang
twangy adj.
1858, from twang (n.) + -y (2). Related: Twangily; twanginess.