Pump/pʌmp/ Definition 1 of 5Pro Tip 1/3Fluid Movement Remember 'pump' involves moving fluids, it's not for solids. The heart pumps blood throughout the body. Pro Tip 2/3Mechanical Device 'Pump' refers to equipment, not manual methods of moving fluids. The farmers installed a pump to irrigate the fields. Pro Tip 3/3Location Specific Some pumps are named for their use, like 'gas pump' at a station. Pull up to the gas pump to refill your tank.