Related Clues:

• Three trios
• Supreme Court, e.g.
• Supreme Court, for one
• Hospital sign
• Set of nine
• Group of nine
• Three trios joined together
• Trio tripled
• The Supreme Court, e.g.
• Baseball team or innings
• The Muses, e.g.
• Baseball team
• Any group of nine
• Octad plus one
• Trio of trios