noun - the act of making sure that laws and rules are obeyed
noun - the police and other people whose job is to make sure that laws are followed and to protect the public
noun - a special police tool placed on the road to stop a car by making its tires lose air
noun - a person who sees a crime or an accident happen and can describe what they saw
adjective - not working at the moment
noun - a person who talks to others to reach an agreement or to solve a problem
noun - is the act of asking someone (usually a suspect or witness) many questions to get information about a crime
adjective - having a speckled appearance of light and dark colours mixed together
adjective - having a mixture of dark and white or grey hairs
noun - an unpleasant, harsh, or metallic ringing sound made by metal objects hitting each other
verb - to make a harsh, discordant, metallic sound, or to cause something to make such a sound
adjective - describing petrol that contains lead compounds