The term "spine" in the context of courage refers to the inner strength and determination a person possesses to face challenges and adversity. It symbolizes the ability to stand firm in one's beliefs and values, even when confronted with fear or opposition. This metaphorical spine supports individuals in making difficult decisions and taking risks. Having a strong spine is often associated with qualities like resilience and bravery. People with a strong spine are willing to advocate for themselves and others, standing up against injustice or wrongdoing. This courage can inspire others and create a positive impact in various situations, from personal relationships to broader societal issues.