pump

1 of 3

noun (1)

1
: a device that raises, transfers, delivers, or compresses fluids or that attenuates gases especially by suction or pressure or both
2
: heart
3
: an act or the process of pumping
4
: an energy source (such as light) for pumping atoms or molecules
5
: a biological mechanism by which atoms, ions, or molecules are transported across cell membranes compare sodium pump

pump

2 of 3

verb

pumped; pumping; pumps

intransitive verb

1
: to work a pump : raise or move a fluid with a pump
2
: to exert oneself to pump or as if to pump something
3
: to move in a manner that resembles the action of a pump handle

transitive verb

1
a
: to raise (something, such as water) with a pump
b
: to draw fluid from with a pump
2
: to pour forth, deliver, or draw with or as if with a pump
pumped money into the economy
pump new life into the classroom
3
a
: to question persistently
pumped him for the information
b
: to elicit by persistent questioning
4
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
5
: to transport (something, such as ions) against a concentration gradient by the expenditure of energy
6
a
: to excite (atoms or molecules) especially so as to cause emission of coherent monochromatic electromagnetic radiation (as in a laser)
b
: to energize (something, such as a laser) by pumping

pump

3 of 3

noun (2)

: 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
Phrases
pump iron
: to lift weights

Examples of pump in a Sentence

Verb He pumped the water up from the bottom of the boat. The machine suddenly stopped pumping. We pumped the boat dry. We had to pump the basement out. Your heart pumps blood all over your body. I could feel the blood pumping through my veins. Blood pumped out of the cut.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
Patient Services net revenue increased by 7.7%, primarily due to additional treatment volume and increased third-party payer collections, offset by lower revenue from sales-type leases of negative pressure wound therapy pumps. Quartz Bot, Quartz, 8 Nov. 2024 The American people would like to continue to see their prices lower at the gas pump and in the grocery store. ABC News, 3 Nov. 2024
Verb
To complete her look, Hilton Rothschild accessorized with a matching pillbox hat, dainty earrings and a diamond necklace, along with a shimmering silver handbag and pumps with crystal details. Maggie Clancy, WWD, 5 Nov. 2024 With straight-leg jeans and leather shoes—like loafers, ballet flats, or pumps—they’re a textured alternative to the thinner, quieter knits in your fall capsule. Jake Henry Smith, Glamour, 4 Nov. 2024 See all Example Sentences for pump 

Word History

Etymology

Noun (1)

Middle English pumpe, pompe; akin to Middle Low German pumpe pump, Middle Dutch pompe

Noun (2)

origin unknown

First Known Use

Noun (1)

15th century, in the meaning defined at sense 1

Verb

1508, in the meaning defined at intransitive sense 1

Noun (2)

1555, in the meaning defined above

Time Traveler
The first known use of pump was in the 15th century

Dictionary Entries Near pump

Cite this Entry

“Pump.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pump. Accessed 24 Nov. 2024.

Kids Definition

pump

1 of 3 noun
: a device that raises, transfers, delivers, or compresses fluids especially by suction or pressure or both

pump

2 of 3 verb
1
: to raise, transfer, or compress by means of a pump
pump up water
2
: to free (as from water or air) by the use of a pump
pump a boat dry
3
: to fill by using a pump
pump up a tire
4
: to draw, force, or drive onward in the manner of a pump
the heart pumps blood into the arteries
5
: to move up and down like a pump handle
pump the hand of a friend
6
a
: to question again and again to find out something
b
: to draw out by such questioning
pumper noun

pump

3 of 3 noun
: a low shoe gripping the foot chiefly at the toe and heel

Medical Definition

pump

1 of 2 noun
1
: a device that raises, transfers, or compresses fluids or that attenuates gases especially by suction or pressure or both
2
: heart
3
: an act or the process of pumping
4
: an energy source (as light) for pumping atoms or molecules
5
: a mechanism by which atoms, ions, or molecules are transported across cell membranes see proton pump, sodium pump

pump

2 of 2 intransitive verb
: to work a pump : raise or move a fluid with a pump

transitive verb

1
: to raise (as water) with a pump
2
: to draw fluid from with a pump
3
: to transport (as ions) against a concentration gradient by the expenditure of energy
4
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

More from Merriam-Webster on pump

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!