1. (noun)carnauba wax, carnauba hard yellowish to brownish wax from leaves of the carnaubapalm used especially in floor waxes and polishes
2. (noun)carnauba, carnauba palm, wax palm, Copernicia prunifera, Copernicia cerifera Brazilian fan palm having an edible root; source of a useful leaffiber and a brittle yellowish wax