noun: (basketball, US, informal) The eight teams participating in the regional finals of the NCAA Division I tournament, one of whom will become the national champion.
noun: (basketball, US, informal) The round of the NCAA Division I basketball tournament where all but 8 teams have been eliminated.
noun: (basketball, US, informal) The eight teams that advance to the site of the final rounds of the NCAA Division II tournament, one of whom will become the national champion.
noun: (basketball, US, informal) An appearance in the Elite Eight, whether in Division I or II.
