KIDNEY

[noun] - either of a pair of small organs in the body which take away waste matter from the blood to produce urineEighteen years ago, Adrian suffered complete kidney failure.Kidneys are also these organs from an animal, used as food.grilled kidneys [C]steak and kidney pie [U]A kidney machine is a machine used to do the work of a human kidney for people whose kidneys have stopped working or have been removed.See also dialysis.A kidney stone is a lump of hard material that forms in the kidney and causes pain.A kidney bean is a small dark-red edible bean which has a curved shape like a kidney.See picture: Beans