noun: (mineralogy) An orthorhombic-pyramidal mineral containing bismuth, oxygen, and tungsten.
noun: (historical) A follower of Sir Thomas Russell, 1st Baronet (1841–1920), Irish politician and agrarian agitator.
noun: (historical) A follower of Charles Taze Russell (1852–1916), Christian restorationist minister from Pittsburgh, Pennsylvania, USA, and founder of what is now known as the Bible Student movement.