n. Wax.n. In ornith.: Properly, a fleshy cutaneous or membranous, sometimes feathered, covering of the base of the upper mandible of a bird, as of all birds of prey and parrots: so called from its waxy appearance. A bare space about the base of the upper mandible, or a fleshy prominence in that situation, or a distinct part of the covering of the upper mandible, though of the same texture as the rest.n. Also cera and ceroma.To wax, or cover with wax, or with a cerecloth.