Related Clues:

• Eye opener, of a sort
• Train whistle sound
• Car alarm?
• Chili-hotness measure
• Perturbation
• Seductress in the ''Odyssey''
• Sleep ender, maybe
• Blow one's own horn?
• Spot announcement?
• Clock partner
• Sound that might deter a burglar
• Snooze, for one
• Dangerous singer
• It might scream after being tripped
• Eyeopener?