/ Dictionary / Index J jam-pack: Meaning and Definition of Find definitions for: jam-pack Pronunciation: (?jam'pak'), [key] ? v.t. to fill or pack as tightly or fully as possible: We jam-packed the basket with all kinds of fruit. Random House Unabridged Dictionary, Copyright 1997, by Random House, Inc., on Infoplease. See also: jampack (Thesaurus) jamoke jamproof Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today?s Analogy Spelling Bee: Today?s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language