/ Dictionary / Index J jelly fungus: Meaning and Definition of Find definitions for: jel'ly fun"gus Pronunciation: [key] any of various fungi of the order Tremellales, distinguished by gelatinous basidiocarp. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. jellyfish jelly roll 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