Trademark. a confection of caramel-coated popcorn.
crack•er•jack
(ˈkræk ərˌdʒæk) n. 1. a person or thing that shows marked ability or excellence. adj. 2. exceptionally fine. [1890–95, Amer.; earlier crackajack, rhyming compound based on crack (adj.)]IdiomsSeecrackerjackMedicalSeeCracker Jacks