A water jet with the addition of abrasive . Used to cut or machine nearly any hard material such as metal, stone, glass, etc. Other terms loosely used to mean "abrasive jet": waterjet water jet water-jet water cutter water jetting h2O jet abrasive water jet Aquajet hydrojet JetMachining® water knife AWJ (Abrasive water jet) UHP (Ultra high pressure) abrasive water jet.