What is the meaning of pump?

noun

• A mechanical device that moves fluid or gas by pressure or suction.
• The hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions move the blood through the body.
  • usage: "he stood still, his heart thumping wildly"
  • synonyms: heart, ticker
• A low-cut shoe without fastenings.

verb

• Operate like a pump; move up and down, like a handle or a pedal.
  • usage: "pump the gas pedal"
• Deliver forth.
  • usage: "pump bullets into the dummy"
• Draw or pour with a pump.
• Supply in great quantities.
  • usage: "Pump money into a project"
• Flow intermittently.
• Move up and down.
  • usage: "The athlete pumps weights in the gym"
• Raise (gases or fluids) with a pump.
• Question persistently.
  • usage: "She pumped the witnesses for information"