Product testing, also called consumer testing or comparative testing, is a process of measuring the properties or performance of products.
cockpit. n. 1. (Aeronautics) the compartment in a small aircraft in which the pilot, crew, and sometimes the passengers sit. Compare flight deck 1. 2. (Motor Racing) the driver's compartment in a racing car.
An armoured, rotating gun installation, on a fort, ship, aircraft, or armoured fighting vehicle. turret(Noun) The elevated central portion of the roof of a passenger car. Its sides are pierced for light and ventilation.