A cashew is a bushy tree that grows cashew nuts. Roasted, salted cashews make a great snack.
While cashews are always categorized with other nuts, they are officially a seed, the size and shape of a kidney bean. Cashew trees are native to Brazil, but they were long ago introduced to India, and cashews are a common ingredient in many South Asian dishes. Cashew is a shortened form of the French acajou, from the Tupi name for the cashew tree, acajuba.