/ Dictionary / Index J jacobus: Meaning and Definition of Find definitions for: ja•co•bus Pronunciation: ( ju-kō'bus), [key] — pl. -bus•es. a former gold coin of England issued by James I. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Jacob's staff jaconet Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language