Related Clues:

• It's a sign
• Broken mirror, maybe
• Wedding-day downpour, perhaps
• Autograph
• Good or bad sign
• Shooting star, perhaps
• 1976 Gregory Peck film, with "The"
• Aries or Scorpio
• Overcast sky, to some
• Spilled salt, to some
• Forebode
• Black cat or eclipse, maybe
• Symptom
• Lightning bolt, perhaps
• 17-Across, perhaps