a : something that is formed by casting inside a mold or form: such as (one) : a replica (as of the statue) in steel or plaster : casting (2) : a fossil reproduction of the details of a natural item by mineral infiltration b : an perception taken go here from an item by using a liquid or plastic material : mold They made a mask from the wax cast of her facial area.
: a mass of plastic make any difference fashioned in cavities of diseased organs (since the kidneys) and discharged from the body
discard implies the allowing go or throwing absent of something that is now worthless or superfluous though usually not intrinsically valueless.