American football

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

• proper noun A game similar to rugby football in which two teams attempt to get an ovoid ball into each other's territory. Called football in the United States and Canada and American football elsewhere in the world.

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

• noun a game played by two teams of 11 players on a rectangular field 100 yards long; teams try to get possession of the ball and advance it across the opponents goal line in a series of (running or passing) plays