a : something that is formed by casting inside a mold or type: including (1) : a copy (as of a statue) in metal or plaster : casting (2) : a fossil reproduction of the details of a all-natural object by mineral infiltration b : an impression taken from an object with a liquid or plastic substance : mold They built a mask from the wax cast of her facial area.
: a mass of plastic matter website formed in cavities of diseased organs (given that the kidneys) and discharged from the human body
supporting cast A part of the movie's achievements lies within the energy of the supporting cast (= the actors who were not actively playing the main elements).