Curfew is the time of day which once brought with it evening and the end of work. The word comes from the French expression couvre-feu which means cover the fire. At curfew, a bell was rung, telling people to put out their lights, cover their fires, and get off the streets until daybreak. William the Conqueror introduced the curfew in England during the 1000's. In 1103 Henry I repealed the curfew law, but the bell continued to be rung. It is still rung in some parts of the United Kingdom.