/ Dictionary / Index J Jonah crab: Meaning and Definition of Find definitions for: Jo'nah crab" Pronunciation: [key] a large, red, deepwater crab, Cancer borealis, of the east coast of North America. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Jonah Jonathan Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language