An excavator, also known as a digger, is a construction vehicle with a long arm and a claw-like tool at the end, used for digging and moving earth and other materials. It typically consists of a cab, a boom, a stick, and a bucket or other attachment, and is powered by a diesel engine. Excavators are used in a variety of construction and demolition tasks, such as digging trenches, excavating foundations, and clearing land. They are also used in mining, agriculture, and other industries.