/ Dictionary / Index J jass: Meaning and Definition of Find definitions for: jass Pronunciation: (yäs), [key] — n. a card game for two persons that is played with a 36-card pack made by removing all cards below the sixes from a regular 52-card pack, in which point values are assigned to certain melds and to certain cards taken in tricks. the jack of trumps in klaberjass. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. jaspery jassid Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language