loading tray [`lōd·iŋ ´trā] ENGINEERING A tray with a sliding bottom used to simultaneously load the plastic charge into the cavities of a multicavity mold. ORDNANCE 1. Trough-shaped carrier on which heavy projectiles are placed so that they can be more easily and safely slipped into the breech of a gun. 2. Hollowed slide which guides the projectiles into the breech of some types of automatic weapons. |