The brazen bull is an execution/torture device designed in ancient Greece.
Perillos of Athens, a brass-founder, proposed to Phalaris, Tyrant of Agrigentum, the invention of a new means for executing criminals; accordingly, he cast a brazen bull, made totally of brass, hollow, with a door in the side. The condemned was shut up in the bull and a fire was set under it, heating the metal until it became "yellow hot" and causing the person inside to quickly roast to death. So that 'nothing unseemly might spoil his feasting', Phalaris commanded that the bull be designed in such a way that its smoke rose in spicy clouds of incense. The head of the ox was designed with a complex system of tubes and stops so that the prisoner's screams were converted into sounds like the bellowing of an infuriated bull. It is also said that when the bull was reopened, the scorched bones of the remains shone like jewels and were made into bracelets.
Phalaris commended the invention, and ordered its horn sound system to be tested by Perillos himself. When Perillos entered, he was immediately locked in, and the fire was set, so that Phalaris could hear the sound of his screams.
Before Perillos could die, Phalaris opened the door and took him away. Perillos believed he would receive a reward for his invention; instead, after freeing him from the bull, Phalaris threw him from the top of a hill, killing him. Phalaris himself is said to have been killed in the brazen bull when he was overthrown by Telemachus.
