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 completely successful moves in card games, like the one mentioned above. Today, many sporting events have some version of a grand slam, too — in tennis, basketball, and golf, it means winning every major tournament in that sport in a year. In the U.S., many 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!