Related Clues:

• 5th or Mad., e.g.
• "Yo, Hadrian!"
• Salutation from Brutus
• "Hail," to Ovid
• 'Greetings, Brutus!'
• Constitution in D.C., e.g.
• Park in NYC, e.g.
• St. intersector
• N.Y.C.'s A, B, C or D
• Boston's Mass or Comm, e.g.
• Routing abbr.
• Abbr. before a name in a memo
• Constitution, for one: Abbr.
• Abbr. before a name on a memo
• 'Hi, Claudius'