/ Dictionary / Index C cui bono*: Meaning and Definition of Find definitions for: cui bo•no Pronunciation: (kooi bō'nō Eng. kwē'&sylpbō'nō,&wdspckī'-), [key] — Latin. Latin. for whose benefit? for what use? of what good? Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Cuiabá cu. in. Related Content Daily Word Quiz: reiterate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language