the fruit of a piassava palm (Attalea funifera) of Brazil: it yields palm oil and has a very hard, brown, ivorylike shell used in cabinetwork and by carvers
See coquilla nut in American Heritage Dictionary 4
(kō-kēlˈyə, -kēˈyə)
noun
The thick-shelled seed of a Brazilian feather-leaved palm (Attalea funifera), polished and used for decorative carving or turning.