If a Portion of One's body is inside a cast, it has a plaster cast all-around it to safeguard it even though a broken bone repairs itself:
: a mass of plastic subject shaped in cavities of diseased organs (because the kidneys) and discharged from the human body
discard implies the permitting go or throwing away of something that has grown click here to be worthless or superfluous even though generally not intrinsically valueless.