cashew nut

n.

A kidney-shaped nut that is edible when roasted.

Also cashew.

pistachio nut

n.

Nut of Mediterranean trees having an edible green kernel.

Also pistachio.

pine nut

n.

A small sweet seed of some pine trees.

peanut

n.

An oily edible seed with a thin shell that grows underground and is a source of vegetable oil.

chestnut

n.

An edible nut that grows inside a prickly husk and has a glossy brown skin.

walnut

n.

Nut containing an edible kernel with a wrinkled surface in a pair of boat-shaped shells.

hazelnut

n.

The edible nut of a hazel, having a hard smooth brown shell.

Also called filbert.