(plural acoustic guitars)
Retronym for guitar, coined after the invention of the electric guitar to refer to the older type of guitar and avoid confusion with the electric guitar.
"acoustic-guitar." YourDictionary, n.d. Web. 15 August 2018. <http://www.yourdictionary.com/acoustic-guitar>.
acoustic-guitar. (n.d.). Retrieved August 15th, 2018, from http://www.yourdictionary.com/acoustic-guitar