"ivory nut." YourDictionary, n.d. Web. 15 October 2018. <http://www.yourdictionary.com/ivory-nut>.
ivory nut. (n.d.). Retrieved October 15th, 2018, from http://www.yourdictionary.com/ivory-nut
The seed of any of various tropical American palms of the genus Phytelephas, having a hard white endosperm that is the source of vegetable ivory, used for carving and manufacturing buttons. Also called tagua nut .