A water pump is a device that is used to move or transfer water from one place to another. It can be manually operated, powered by electricity or even through steam. Water pumps are commonly used in irrigation systems, for supplying water to homes and buildings, as well as in various industrial processes where water needs to be moved around. The term "water pump" is also sometimes used metaphorically to refer to someone who is very good at their job or who excels in a particular field - the idea being that they are able to "pump up" others and inspire them to do their best work.