noun, American English - an oval track used for speedway racing or other types of motor racing
noun, British English - a motorcycle or car race held on an oval dirt or paved track, where riders or drivers compete at high speed, often sliding through corners
noun - a small camera worn on a police officer's uniform to record what happens while they are on duty
noun - a person who sees a crime or an accident happen and can describe what they saw
noun - a person who talks to others to reach an agreement or to solve a problem
adjective - working secretly, especially as a police officer trying to get information without people knowing who you really are
noun - a male reproductive cell that can join with a female egg to create a new life
adjective - not allowed or not suitable to do something or receive something, especially by law or by rules