The term 'Jackhammer' is a type of DRILL used in construction and demolition work. It is a powerful tool that uses rapid, repeated hammering action to break up hard surfaces such as concrete and asphalt. The term 'DRILL' is a five-letter word that can be used to describe a Jackhammer. A DRILL is a tool used to make holes in materials such as wood, metal, or stone. It is powered by electricity, compressed air, or a gasoline engine.