hɑːt hɑɹt tɪkə(ɹ) question persistently She pumped the witnesses for information deliver forth pump bullets into the dummy operate like a pump; move up and down, like a handle or a pedal pump the gas pedal raise (gases or fluids) with a pump move up and down The athlete pumps weights in the gym draw or pour with a pump flow intermittently supply in great quantities Pump money into a project a mechanical device that moves fluid or gas by pressure or suction a low-cut shoe without fastenings the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions move the blood through the body he stood still, his heart thumping wildly