Grand Slam is a general sports term applied when achieving something special.
Most common uses:
In tennis, winning the Grand Slam is winning the following four tournaments in the same year: Australian Open, French Open, Wimbledon, US Open. Those tournaments are therefore also known as the Grand Slam tournaments.
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As of the census of 2000, there are 14,078 people, 4,578 households, and 3,731 families residing in the town. The population density is 1,322.5/km² ...