(Anacardium occidentale), a tree up to 12 m tall of the family Anacardiaceae. It is cultivated in the tropics. The shell of the nutlike fruit yields cashew oil, which is used in medicine; there is also an edible nucleus. The pear-shaped peduncle, known as the cashew apple, has a pleasant bittersweet taste, is rich in vitamin C, and is valued as a fruit. A gum is made from the trunks of old cashew trees. Articles made from cashew wood are resistant to decay.