"Ran" is the past tense of the verb "run," which means to move swiftly on foot. It can refer to a person or an animal moving quickly, often for exercise, competition, or to escape danger. Running is a common physical activity that can improve cardiovascular health and overall fitness. In addition to its physical meaning, "ran" can also describe the operation of machines or systems. For example, a car that "ran" smoothly indicates it was functioning well. Similarly, a program that "ran" without errors means it executed correctly. Both uses highlight the concept of movement or operation.