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pump

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verb pump pronunciation in British English /pʌmp/
Word Forms
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present tense
I/you/we/theypump
he/she/itpumps
present participlepumping
past tensepumped
past participlepumped
  1. 1
    [transitive] physics to make liquid or gas move into or out of something, especially by using a pump

    Pumping water uphill is difficult and expensive.

    Poisonous gases are pumped into the atmosphere every day.

    1. a.
      [intransitive] if a liquid pumps from somewhere, a lot of it comes out in quick regular movements

      Blood was pumping from a wound in his arm.

  2. 2
    [transitive] to push something up and down with an action like pumping

    Liz pumped the accelerator and tried to start the car.

    1. a.
      [intransitive] to move with an action like that of a pump

      Her heart was pumping fast.

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