berserkBBK wrotedefensive box meaning the defensive lane area?
The lower defensive box is an area in the frontcourt bound by the 3 foot marks on each side of the lane and the lower tip of the free throw circle. So in English haha:
There's a mark on the court, 3 feet outside each lane line. That's the outside edge of the lower defensive box. The top portion would be the lower part of the free throw circle (remember they have this because the NBA doesn't use the AP method).
The lower defensive box is important in determining whether the restricted area applies on a block/charge play and to whether a player has to afford a player who receives a pass an opportunity to stop and change direction.