noun
1. : an essential oil obtained from sandalwood: as
a. : a pale yellow somewhat viscous aromatic liquid obtained from the sandalwood ( Santalum album ) usually from Mysore, India, and used chiefly in perfumes and soaps and especially formerly in medicine — called also East Indian sandalwood oil, santal oil
b. : a similar oil obtained from a sandalwood ( Eucarya spicata ) in Western Australia — called also Australian sandalwood oil
2. : amyris oil