free throw lane

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The usually painted rectangular area between the foul line and the baseline on a basketball court, into which players cannot enter while a free throw is being taken.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a lane on a basketball court extending from the end line to 15 feet in front of the backboard; players may not enter this lane during a free throw