Shavuot is also the celebration of the wheat harvest and the ripening of the first fruits, which is the reason for the other two biblical names for this holiday: 1) "Yom Habikurim" or the "Day of the First Fruits." 2) "Chag HaKatzir," the "Harvest Festival."
In the Talmud, Shavuot is also called "Atzeret," which means "The Stoppage," a reference to the prohibition against work on this holiday.
