noun \ˈpəmp\

Definition of PUMP

:  a device that raises, transfers, delivers, or compresses fluids or that attenuates gases especially by suction or pressure or both
:  heart
:  an act or the process of pumping
:  an energy source (as light) for pumping atoms or molecules
:  a biological mechanism by which atoms, ions, or molecules are transported across cell membranes — compare sodium pump

Origin of PUMP

Middle English pumpe, pompe; akin to Middle Low German pumpe pump, Middle Dutch pompe
First Known Use: 15th century



: to move something (such as water, air, or gas) to or from a particular place with a pump

: to remove water, air, etc., from (something) with a pump

: to remove the contents of (someone's stomach) by using a tube and a small pump

Full Definition of PUMP

intransitive verb
:  to work a pump :  raise or move a fluid with a pump
:  to exert oneself to pump or as if to pump something
:  to move in a manner that resembles the action of a pump handle
transitive verb
a :  to raise (as water) with a pump
b :  to draw fluid from with a pump
:  to pour forth, deliver, or draw with or as if with a pump <pumped money into the economy> <pump new life into the classroom>
a :  to question persistently <pumped him for the information>
b :  to elicit by persistent questioning
a :  to operate by manipulating a lever
b :  to manipulate as if operating a pump handle <pumped my hand warmly>
c :  to cause to move with an action resembling that of a pump handle <a runner pumping her arms>
:  to transport (as ions) against a concentration gradient by the expenditure of energy
a :  to excite (as atoms or molecules) especially so as to cause emission of coherent monochromatic electromagnetic radiation (as in a laser)
b :  to energize (as a laser) by pumping
pump iron
:  to lift weights

Examples of PUMP

  1. He pumped the water up from the bottom of the boat.
  2. The machine suddenly stopped pumping.
  3. We pumped the boat dry.
  4. We had to pump the basement out.
  5. Your heart pumps blood all over your body.
  6. I could feel the blood pumping through my veins.
  7. Blood pumped out of the cut.

First Known Use of PUMP




Definition of PUMP

:  a shoe that grips the foot chiefly at the toe and heel; especially :  a close-fitting woman's dress shoe with a moderate to high heel

Origin of PUMP

origin unknown
First Known Use: 1555


noun    (Concise Encyclopedia)

Machine that uses energy to raise, transport, or compress fluids. Pumps are classified by how they transfer energy to the fluid. The basic methods are volume displacement, addition of kinetic energy, and use of electromagnetic force. Pumps in which displacement is accomplished mechanically are called positive displacement pumps. Kinetic pumps pass kinetic energy to the fluid by means of a rapidly rotating impeller (blade). To use electromagnetic force, the fluid being pumped must be a good electrical conductor. Pumps used to transport or pressurize gases are called compressors, blowers, or fans.


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