ivory palm

1. The seed of the ivory palm, having bony endosperm that is used as a substitute for true ivory.
   象牙椰子树的种子，具有似骨的内胚乳，它可被用作真象牙的替代品。

noun

1. a stemless palm tree of Brazil and Peru bearing ivory nuts

   Synonym:    ivory-nut palmivory plantPhytelephas macrocarpa