Possible Clues:

• That's the way to make one one over the eight
• Group of 112-Down
• Nine finish, almost (almost!) getting stuck
• A group or set of nine
• Anne gets confused when the editor comes round one over the eight
• Supreme Court or baseball team, e.g.
• Term for a group of nine
• Need a N if you're one over the eight
• The Supreme Court is one
• Group of nine (rare); Anne, Ed (anag.)