noun, American English - an oval track used for speedway racing or other types of motor racing
noun, American English - a small toy that consists of a wheel of paper or plastic attached at its center to a stick so that it spins when blown by the wind
noun, American English - a person who clears tables, removes dirty dishes, and helps the waiters in a restaurant
noun, American English - a person who clears tables, removes dirty dishes, and helps the waiters in a restaurant
noun - a person who secretly gives the police information about criminals or crimes
adjective - connected with scientific methods used by the police to solve crimes, such as studying fingerprints or DNA
verb - to secretly tell someone important information, usually to warn them or help the police
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