all-A|mer|i|can «L uh MEHR uh kuhn», adjective, noun.
1. Sports. selected as the best of its class in the United States: »

He was chosen as the quarterback on this year's all-American football team.

2. made up entirely of Americans or American elements: »

The ship had an all-American crew.

3. representing the whole United States.
4. typically or thoroughly of the United States; characteristically American: »

... the all-American passion for breaking records (Atlantic).

1. Sports. a player selected as one of the best in the United States at his position.
2. a hypothetical team made up of college players, each selected as best in the United States at his position.

Useful english dictionary. 2012.