Other forms: grand slams
A grand slam is a stunning achievement in sports or games. In the card game bridge, players get a grand slam when they win all the tricks in one hand, scoring the highest possible points.
Grand slam was first used around 1800 for moves in card games that were a complete success, like taking all the tricks in a hand. Many sporting events have some version of a grand slam too — in tennis, basketball, and golf, it means winning every major tournament in a year. In the U.S., most people associate the term grand slam with baseball or softball. When you hit a home run with the bases loaded, it's a grand slam!