1. a. Any of several tropical Asian hemiparasitic trees of the genus Santalum, especially S. album, having aromatic yellowish heartwood used in cabinetmaking and wood carving and yielding an oil used in perfumery.
b. Any of several other tropical Asian trees, especially those of the genera Adenanthera and Pterocarpus that yield a hard wood and a red dye.
c. The wood of any of these trees.