Related Clues:

• Puff __
• One in the viper family
• Cobra cousin
• Cobra
• Cleopatra pal
• Shakespeare's 'poor venomous fool'
• Cleo's snake
• Cleopatra's biter
• Deadly hisser
• "The Black ___" (first of a Rowan Atkinson Britcom series)
• Cleopatra's "poor venomous fool"
• Certain viper
• Horned viper, for one
• Nonspeaking Shakespearean character
• One doing sums