end zone

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

• noun The area at either end of the playing field between the goal line and the end line.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun American football the area between the end line and goal line bounded by the sidelines. It is bordered on all sides by a white line indicating its beginning and end points. American football end zone.