Catalina /ˌkætəˈliːnə/ noun4 •(historical) A twin-engined amphibious aircraft used during the Second World War. •(informal) Ellipsis of Santa Catalina Island: an island of Los Angeles County, California, off the coast, one of the Channel Islands. •(informal) A Catalina coupon. •A locality in the Eurobodalla council area, south eastern New South Wales, Australia. formsCatalinas