Related Clues:

• The courage to carry on
• Mettle, daring
• Staying power, ability to withstand prolonged strain
• Toughness, force
• Informal courage of spinal kind
• Endurance, strength to stay the course
• Strand of body fibre
• Physical capacity
• Bodily fibre that communicates sensations
• Hold it and maintain courage
• Kind of courage or dirt
• Spine or courage
• Strength of character, courage
• Ability to withstand prolonged hardship
• Nerve, heart, courage