a shrub, Simmondsia chinensis (or S. californica), of the southwestern U.S. and Mexico, bearing seeds that are the source of an oil (jojoba oil) used in cosmetics and as a lubricant.
[From its being a chief source of food for wild goats.]
jo·jo·ba (hə-hō'bə, hō-) n. A dioecious shrub (Simmondsia chinensis) of the southwest United States and northern Mexico, having opposite, leathery leaves and edible seeds that contain a valuable oil used in cosmetics and as a lubricant. Also called goat-nut.