/ Dictionary / Index C Cracker Jack: Meaning and Definition of Find definitions for: Crack'er Jack" Pronunciation: [key] — Trademark. Trademark. a confection of caramel-coated popcorn and peanuts. crack•er•jack Pronunciation: (krak'ur-jak"), [key] — Informal. Informal. —n. a person or thing that shows marked ability or excellence. —adj. of marked ability; exceptionally fine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: crackerjack (Thesaurus) crackerberry Cracker State Related Content Daily Word Quiz: eccentric Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language