intransitive verb
Definition: To move up and down like a pump handle or to operate a pump, often used in sports to describe a fake movement.
Example: He decided to pump his arms to fake out the defender before making a real shot.
noun
Definition: A device that moves or transfers liquids or gases, often by creating pressure or suction.
Example: The mechanic used a pump to remove the water from the flooded basement.
transitive verb
Definition: To move a liquid or gas by using a device that creates pressure, often in a repeated up-and-down motion.
Example: He had to pump the water out of the flooded basement.