British economist (born in India) whose report on social insurance provided the basis for most of the social legislation on which the welfare state in the United Kingdom is based (1879-1963)
a screw (often without a head) that fits into the boss or hub of a wheel or cam etc. and prevents motion of the part relative to the shaft on which it is mounted
Emperor of Rome and founder of the Flavian dynasty who consolidated Roman rule in Germany and Britain and reformed the army and brought prosperity to the empire; began the construction of the Colosseum (9-79)
a hypothetical subatomic particle of large mass that interacts weakly with ordinary matter through gravitation; postulated as a constituent of the dark matter of the universe