Flushing is a process that involves cleaning out a system by forcing water or another liquid through it. This is commonly done in plumbing to clear out pipes and remove any blockages or buildup. For example, when you flush a toilet, water rushes through the pipes, carrying waste away and ensuring everything is clean and functioning properly. In a broader context, flushing can also refer to the act of rinsing out a radiator in a car or even cleaning out a fish tank. In each case, the goal is to remove impurities and maintain optimal performance, whether it's for plumbing, vehicles, or aquariums.