Casing may refer to: any enclosing shell, tube or surrounding material Casing (ammunition), a shell enclosing the explosive propellant in ammunition Casing (borehole), a metal tube used during the drilling of a well Casing (moulding), Molding (decorative) surrounding door or window openings Casing (sausage), a thin covering holding the food contents of sausage Casing (submarine), a platform attached to the upper side of a submersible vehicle Casing stone, a smooth stone covering for a st… (More on Casing)