<p><strong>Noun</strong></p><ul><li>an apparatus or machine for raising, driving, exhausting, or compressing fluids or gases by means of a piston, plunger, or set of rotating vanes.</li><li>a shore having a jackscrew in its foot for adjusting the length or for bearing more firmly against the structure to be sustained.</li><li>an animal organ that propels fluid through the body; heart.</li><li>a system that supplies energy for transport against a chemical gradient, as the sodium pump for the transfer of sodium and potassium ions across a cell membrane.</li></ul><p><strong>Verb</strong></p><ul><li>(used with object) to raise, drive, etc., with a pump.</li><li>to free from water or other liquid by means of a pump.</li><li>to inflate by pumping (often followed by up): to pump a tire up.</li><li>to operate or move by an up-and-down or back-and-forth action.</li><li>to supply with air, as an organ, by means of a pumplike device.</li><li>to drive, force, etc., as if from a pump: He rapidly pumped a dozen shots into the bull's-eye.</li><li>to supply or inject as if by using a pump: to pump money into a failing business.</li><li>to question artfully or persistently to elicit information: to pump someone for confidential information.</li><li>to elicit (information) by questioning.</li></ul><p><strong>Verb</strong></p><ul><li>(used without object) to work a pump; raise or move water, oil, etc., with a pump.</li><li>to operate as a pump does.</li><li>to move up and down like a pump handle.</li><li>to exert oneself in a manner likened to pumping: He pumped away at his homework all evening.</li><li>to seek to elicit information from a person.</li><li>to come out in spurts.</li></ul><p><strong>Verb Phrase</strong></p><ul><li>to inflate.</li><li>to increase, heighten, or strengthen; put more effort into or emphasis on; intensify: The store has decided to pump up its advertising.</li><li>to infuse with enthusiasm, competitive spirit, energy, etc.: The contestants were all backstage pumping themselves up for their big moment.</li></ul>