The highly perfumed yellowish heartwood of an East Indian and Polynesian tree (Santalum album), and of several other trees of the same genus, as the Hawaiian Santalum Freycinetianum and S. pyrularium, the Australian S. latifolium, etc. The name is extended to several other kinds of fragrant wood.
- Any of several tropical Asian 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.
- Any of several tropical Asian trees of the genera Adenanthera, Myroporum, and Pterocarpus.
- The wood of any of these trees.
- A light to moderate or grayish brown.