Proper noun

1. A type of scaled down debut, or coming out party, for young women that reach the age of sixteen years.
2. The sixteen teams participating in the third round of the NCAA Division I tournament, one of whom will become the national champion.
3. The third round of the NCAA Division I tournament.
4. An appearance in the Sweet Sixteen.

   The new coach has just led the Nimrods to their first Sweet Sixteen.