An area of the law that deals with the actions and well-being of persons who are not yet adults. In the law a juvenile is defined as a person who is not old enough to be held responsible for criminal acts. In most states and on the federal level, this age threshold is set at 18 years. In Wyoming a juvenile is a person under the age of 19. In some states a juvenile is a person under the age of 17, and in Connecticut, New York, and North Carolina, a juvenile is a person under the age of 16. These age definitions are significant because they determine whether a young person accused of criminal conduct will be charged with a crime in adult court or will be required to appear in juvenile court.