A tremolo arm on an electric guitar.
More example sentences
- In fifth grade, I had a snazzy red electric guitar with a whammy bar that I never really learned how to play.
- It's an intoxicating throwback - guitar effects are mostly limited to reverb, tremolo and the occasional whammy bar; it's as if feedback and fuzz tone still haven't been discovered!
- Those of you who thirst after ever-more magic from the dark wizard of the whammy bar should really seek this thing out.