Ca·a'ba (kȧ*ā'bȧ) noun [ Arabic ka'bah , lit., a square building, from ka'b cube.] The small and nearly cubical stone building, toward which all Mohammedans must pray. [ Written also kaaba .] » The Caaba is situated in Mecca, a city of Arab... Found on http://www.encyclo.co.uk/webster/C/1