Related Clues:

• 45-Across had one
• Venomous viper
• Cleopatra's undoing
• African cobra
• Cairo killer
• Snake that's really sumthing?
• One with forked tongue
• Adder relative
• Venom source
• Snake that gets total results?
• Summer snake?
• Pharaoh's cobra
• Snake that may warn before it strikes
• Cleo's doom
• Terrestrial viper