👉 The term "unpumpable" in the context of a pump is used to describe a device or an object that cannot be filled with a fluid. This means that once it's empty, it can't be filled again. For example, if you have a vacuum cleaner and want to fill it up with water, but when you try to fill it up, it doesn't work because there is no water in the pump or reservoir. Similarly, a pump cannot be used for pumping liquids without
