"Lifeblood" refers to something that is essential for the survival or functioning of a system, organization, or individual. It often symbolizes the vital resources or elements that sustain life, such as blood in a biological context, which carries oxygen and nutrients throughout the body. In a broader sense, lifeblood can represent key factors like money, energy, or support that keep a business or community thriving. In various contexts, the term can also describe the core values or principles that drive a group or movement. For example, the lifeblood of a nonprofit organization might be its volunteers and donations, while the lifeblood of a startup could be its innovative ideas and customer engagement. Understanding what constitutes lifeblood is crucial for maintaining health and vitality in any system.