/ Dictionary / Index C cash cow: Meaning and Definition of Find definitions for: cash' cow" Pronunciation: [key] — Informal. Informal. any business venture, operation, or product that is a dependable source of income or profit. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cashbox cash crop Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language