Related Clues:

• Road-map abbr.
• In NYC, Madison or Lexington
• N.Y.C.'s Park, e.g.
• Hello or goodbye
• Cuts down
• Weakens
• Fifth is one
• Word of welcome
• Street sign abbr.
• Monopoly space: Abbr.
• Hadrian's ''Hail!''
• Park in N.Y.C., e.g.
• Caesar's greeting
• Hail, classically
• Word of farewell