Breadcrumb Home > Dictionary > Index C casa: Meaning and Definition of Find definitions for: ca•sa Pronunciation: (kä'su, -sä), [key] — n. Southwestern U.S. a house. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. C.A.S. casaba ✖ Related Content Daily Word Quiz: derogate Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language