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
pumped; pumping; pumps
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
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
: 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
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
Hannah Malach, WWD, 15 Jan. 2025
Most Costco locations have gas pumps and offer very competitive pricing with some reports stating up to 20 cents cheaper per gallon.
—Kait Hanson, Southern Living, 14 Jan. 2025
Jay King, The Athletic, 17 Jan. 2025
There, water is pumped uphill into three tanks, each with a capacity of 1 million gallons of water.
—Matt Hamilton, Los Angeles Times, 16 Jan. 2025
See all Example Sentences for pump 
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
The athlete accessorized with nude pumps and gold jewelry, including cuff bracelets and a dainty necklace.
—Hannah Malach, WWD, 15 Jan. 2025
Most Costco locations have gas pumps and offer very competitive pricing with some reports stating up to 20 cents cheaper per gallon.
—Kait Hanson, Southern Living, 14 Jan. 2025
Verb
White pumped the ball over to Jrue Holiday, who lobbed a pass into Porziņģis standing just a few feet from the hoop.
—Jay King, The Athletic, 17 Jan. 2025
There, water is pumped uphill into three tanks, each with a capacity of 1 million gallons of water.
—Matt Hamilton, Los Angeles Times, 16 Jan. 2025
See all Example Sentences for pump
Articles Related to pump
Dictionary Entries Near pump
Cite this Entry
“Pump.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pump. Accessed 22 Jan. 2025.
Copy CitationKids 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 verb1
: 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 noun1
: 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
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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share