/ Dictionary / Index K Kasai: Meaning and Definition of Find definitions for: Ka•sai Pronunciation: (ku-sī', kä-), [key] — n. a river in S central Africa, flowing from central Angola to and then NW along the Angola-Zaire border and through Zaire to the Congo (Zaire) River. ab. 1100 mi. (1770 km) long. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: kasai (Thesaurus) kas Kasavubu Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language