Related Clues:

• Courage may end with pain
• Steel - brass
• Courage - impertinence
• Steel - bottle - neck
• Brass - steel
• Courage - cheek
• Sensor for pain etc
• Cool courage
• Audacity (informal)
• Derring-do
• Bottle-opener very well hidden?
• Impulse transmitter — bottle
• Brass neck
• "The __!"
• Novocaine target