Breadcrumb Home > Dictionary > Index J Cite 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 TrendingHere are the facts and trivia that people are buzzing about. January 2021 Current Events: US News Noble Titles and Ranks in a Monarchy Chinese New Year History, Meaning, and Celebrations The Manchu The 5 Best Air Purifiers of 2020 Inaugural Trivia Related Content Daily Word Quiz: umbrage Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language