pump

(noun) a mechanical device that moves fluid or gas by pressure or suction.

(noun) the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions move the blood through the body. Synonyms: heart, ticker. Example: "He stood still, his heart thumping wildly."

(noun) a low-cut shoe without fastenings.

(verb) operate like a pump; move up and down, like a handle or a pedal. Example: "Pump the gas pedal."

(verb) deliver forth. Example: "Pump bullets into the dummy."

(verb) draw or pour with a pump.

(verb) supply in great quantities. Example: "Pump money into a project."

(verb) flow intermittently.

(verb) move up and down. Example: "The athlete pumps weights in the gym."

(verb) raise (gases or fluids) with a pump.

(verb) question persistently. Example: "She pumped the witnesses for information."