Joseph-Ignace Guillotin was a French physician, politician, and freemason who proposed on 10 October 1789 the use of a device to carry out executions in France, as a less painful method of execution than existing methods. Although he did not invent the guillotine and opposed the death penalty, his name became an eponym for it. The actual inventor of the prototype was a man named Tobias Schmidt, working with the king's physician, Antoine Louis.

A guillotine is an apparatus designed for effectively carrying out executions by beheading. The device consists of a tall, upright frame with a weighted and angled blade suspended at the top. The condemned person is secured with a pillory at the bottom of the frame, holding the position of the neck directly below the blade. The blade is then released, swiftly and forcefully decapitating the victim with a single, clean pass; the head falls into a basket or other receptacle below.