Jemmy is a term used to refer to a variety of tools used for prying and levering. The most common form is a CROWBAR, which is a metal bar with a single curved end and flattened points, used as a LEVER either to force apart two objects or to remove nails. A LEVER is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum. It is used to move an object with a force applied to one end of the beam. An OPENER is a device used to open containers such as bottles, jars, boxes, and cans. Lastly, a TOOL is an instrument or device that is used to carry out a particular function. All of these terms are synonymous with the term jemmy.