grand slam
US /ˌɡrænd ˈslæm/
UK /ˌɡrænd ˈslæm/
1.
a single player or team winning all of a group of major championships or contests in a particular sport in the same season or year
:
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She achieved a grand slam in tennis, winning all four major tournaments.
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The team is aiming for a grand slam this baseball season.
2.
a home run hit with the bases loaded, scoring four runs
:
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He hit a grand slam in the bottom of the ninth inning to win the game.
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The crowd erupted when the batter hit a grand slam.