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.
... and the more familiar classical languages of Greek and Latin can be seen, for instance, in the Sanskrit words for mother, matr, and father, pitr. The similarities ...