a member of a group of ancient Greek philosophers who advocated the doctrine that virtue is the only good and that the essence of virtue is self-control
armament consisting of a long cylindrical self-propelled underwater projectile that detonates on contact with a target
a small explosive device that is placed on a railroad track and fires when a train runs over it; the sound of the explosion warns the engineer of danger ahead
a small firework that consists of a percussion cap and some gravel wrapped in paper; explodes when thrown forcefully against a hard surface
an explosive device that is set off in an oil well (or a gas well) to start or to increase the flow of oil (or gas)
official permission or approval; "authority for the program was renewed several times"
the power or right to give orders or make decisions; "he has the authority to issue warrants"; "deputies are given authorization to make arrests"; "a place of potency in the state"
an authoritative written work; "this book is the final authority on the life of Milton"
an expert whose views are taken as definitive; "he is an authority on corporate law"
(usually plural) persons who exercise (administrative) control over others; "the authorities have issued a curfew"