in AM, use 美国英语用 football
1 N-UNCOUNT 美式橄榄球（运动）；美式足球（运动） American football is a game similar to rugby that is played by two teams of eleven players using an oval-shaped ball. Players try to score points by carrying the ball to their opponents' end of the field, or by kicking it over a bar fixed between two posts. 美式橄榄球（运动）；美式足球（运动） [British]
2 N-COUNT 美式橄榄球用球 An American football is an oval-shaped ball used for playing American football. 美式橄榄球用球 [British]
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