Casing may refer to: Casing (ammunition), a shell enclosing the explosive propellant in ammunition Casing (sausage), a thin covering holding the food contents of sausage Casing (borehole), a metal tube used during the drilling of a well Casing (submarine), a platform attached to the upper side of a submersible vehicle Casing (moulding), decorative moulding surrounding door or window openings Casing (machine), part of a machine or device that properly encloses the other parts of the machine… (More on Casing)