Key (basketball)
（重定向自Free throw lane）
The key, officially referred to as the free throw lane by the National Basketball Association (NBA) and the National Collegiate Athletic Association (NCAA), the restricted area by the international governing body FIBA, and colloquially as the lane or the paint, is an area on a basketball court underneath the basket bounded by the endline, the foul line and other lines which are known as freebody lines, that are usually painted (although unpainted on some courts with painted perimeters). It is a critical area on the court where much of the action takes place in a game.