the fragrant heartwood of any of certain Asian trees of the genus Santalum, used for ornamental carving and burned as incense.
any of these trees, esp. S. albuman evergreen of India, having ovate leaves and yellowish flowers that turn red.
any of various related or similar trees or their woods, esp. an East Indian tree, Pterocarpus santalinusof the legume family, or its heavy dark-red wood that yields a dye.