A morningstar, or "morning star", is usually described as a studded, metal ball attached by a chain to a thick stick. Gladiators use these. King Gordok used one in the mak'gora challenge issued by Malus who bested his opponent and ended the ogre's life with the weapon.
In World of Warcraft
While flails and morningstars look like standard maces in WoW, and can both become morningstar-like weapons.