The term CROWBAR, ESSENTIALLY can be solved by the five-letter word LEVER. A LEVER is a simple machine consisting of a bar or beam that pivots on a fixed point, known as a fulcrum, and is used to move or lift objects. A crowbar is a type of LEVER specifically designed for prying open objects, such as nails or locks. It is usually made of metal and has a curved end and a flat end. The curved end is used to apply pressure to the object, while the flat end is used to provide leverage.