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English definition of “grand slam”

grand slam

noun [C] /ˈɡrænd ˈslɑm/

grand slam noun [C] (BASEBALL)

in baseball, the hitting of a home run with runners at all three bases, so that four points are scored

grand slam noun [C] (TENNIS AND GOLF)

in tennis and golf, the act of winning all of a series of important competitions
(Definition of grand slam from the Cambridge Academic Content Dictionary © Cambridge University Press)
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