The term "last" can refer to the final item in a sequence or the end of a duration. For example, in a race, the person who finishes last is the one who takes the longest time to complete the course. In a series of events, the last event is the one that occurs at the end. "Last" can also describe the duration something continues. For instance, if a battery lasts for several hours, it means it can provide power for that amount of time before needing to be replaced. In this context, it indicates endurance or longevity.