A claw bar is a tool that is used to remove nails, pry open doors or windows, and perform other tasks related to construction and demolition. It is also known by several other names. For instance, it is sometimes called a pry bar, because it is used to pry things apart. Some people refer to it as a wrecking bar, or simply a demolition bar, because it is often employed to knock down walls, dismantle structures, and similar activities. Another synonym for claw bar is a crowbar, which is a tool with a similar shape and purpose as the claw bar but differs slightly in design and size.