From Longman Dictionary of Contemporary Englishjawbreakerjaw‧break‧er /ˈdʒɔːˌbreɪkə $ ˈdʒɒːˌbreɪkər/ noun [countable] American EnglishDFF a round hard sweet
Examples from the Corpus
jawbreaker• He approached them opening the bag of jawbreakers noisily and slowly unwrapping the plastic tissue from the largest jawbreaker of them all. 