/ Dictionary / Index C Cousin Jack: Meaning and Definition of Find definitions for: Cous'in Jack' Pronunciation: [key] — pl. Cousin Jacks. a Cornishman, esp. a Cornish miner. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cousin-german cousinly Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language