1informal A word that is very long or hard to pronounce.
- ‘Not only is this jawbreaker incredibly long and weird looking, it has many parts-of-speech in one word!’
2trademark in UK A large, hard, spherical sweet.
- ‘Saunders got me a Buddha candle holder, and I got her a bag of jawbreakers, which have turned out to be her favorite candy.’
- ‘I pushed it back and forth from cheek to cheek like a jawbreaker, watching from afar as my mother retrieved her notebook from her purse and began asking Mr. Welk about his tour experience.’