General Science

  • noun a machine which forces liquid or air into or out of something
  • verb to force liquid or air into or out of something


  • noun a device with rotary or reciprocating action which is used to move fluids along pipes or for compressing fluids


  • verb to put something in by force

Cars & Driving

  • noun a machine that transforms mechanical energy generated by a prime mover into the energy of a moving fluid
  • verb to add kinetic and potential energy to a liquid for the purpose of moving it from one point to another


  • A machine, operated by hand or a prime mover, used to compress and/or move a fluid.


  • In a parametric amplifier, an oscillator which varies a parameter, such as the capacitance or reactance, of the main oscillator. The resulting energy from this pumping action enables amplification of the input signal. Also called pump oscillator.
  • The signal provided by a pump (1). Also called pump signal.
  • In a laser, to excite electrons, molecules, or ions to higher energy levels, so as to initiate and sustain lasing action. Also, such to provide such excitation in a maser. Also, a device which provides such pumping.


  • verb to force liquid or air along a tube


  • noun the heart. The predictable usage occurs in the language of prizefighters and street gangs, etc.
  • verb to fart. A children’s term adopted by adults and now appearing in print in such publications as Viz comic.
  • verb to have sex (with). A vulgarism usually heard in the catchphrase ‘pump ’em and dump ’em’, a male expression of the late 1980s.


  • noun a device for transferring liquid from one place to another, such as for serving beer or petrol
  • verb to transfer liquid from one place to another using a pump

Origin & History of “pump”

The precise origins of pump have never been established. It is now widespread throughout the European languages, by dint of assiduous borrowing (French pompe, for instance), but its epicentre appears to have been northwestern Europe, with middle Low German pumpe or Middle Dutch pompe. It started out, no doubt, as a vocal imitation of the sound of pumping.