A pump is a machine that sucks up liquid from one place and moves it somewhere else, like a gas pump. If you’re pumped about this word, you can put on pumps, pump up the volume, and pump some iron!

When you use the device called a pump, you pump water or gas. Other things that force some liquid or gas to move, also pump: your heart pumps blood, and your foot pumps the brake of your car when you're stopping on an icy road. If you pump iron, you lift weights. If you’re pumped, you’re excited. “Pump Up the Volume” was a hit song in 1987, so turn it up. A pump is also a woman's dress shoe.

Primary Meanings of pump

a mechanical device that moves fluid or gas by pressure or suction
draw or pour with a pump
the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions move the blood through the body
a low-cut shoe without fastenings
Full Definitions of pump

n a mechanical device that moves fluid or gas by pressure or suction

show 22 types...
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air pump, vacuum pump
a pump that moves air in or out of something
a pump that draws air or another gas through a liquid
auxiliary pump, donkey pump
a supplementary pump available if needed
bicycle pump
a small pump that fills bicycle tires with air
bilge pump
a pump to remove bilgewater
centrifugal pump
a pump that use centrifugal force to discharge fluid into a pipe
force pump
pump used to force a liquid up and expel it under pressure
gas pump, gasoline pump, island dispenser, petrol pump
a pump in a service station that draws gasoline from underground storage tanks
grease-gun, gun
a hand-operated pump that resembles a revolver; forces grease into parts of a machine
hand pump
a pump worked by hand
heart-lung machine
a pump to maintain circulation during heart surgery; diverts blood from the heart and oxygenates it and then pumps it through the body
hydraulic pump, hydraulic ram
a water pump that uses the kinetic energy of flowing water to force a small fraction of that water to a reservoir at a higher level
lift pump
pump used to lift rather than force a liquid up
oil pump
a pump that keeps a supply of oil on moving parts
stirrup pump
a hand-operated reciprocating pump; used in fighting fires
suction pump
a pump for raising fluids by suction
water pump
the pump in the cooling system of an automobile that cause the water to circulate
condensation pump, diffusion pump
vacuum pump used to obtain a high vacuum
inflater, inflator
an air pump operated by hand to inflate something (as a tire)
ion pump
a vacuum pump that removes gas by ionizing the atoms or molecules and adsorbing them on a metal surface
stomach pump
a suction pump used to remove the contents of the stomach
sump pump
a suction pump for removing liquid from a sump
Type of:
mechanical device
mechanism consisting of a device that works on mechanical principles

v draw or pour with a pump

Type of:
draw, take out
take liquid out of a container or well

v raise (gases or fluids) with a pump

Type of:
bring up, elevate, get up, lift, raise
raise from a lower to a higher position

v operate like a pump; move up and down, like a handle or a pedal

pump the gas pedal”
give a spurt of fuel to
Type of:
handle, manage, wield
manage or wield effectively

v move up and down

“The athlete pumps weights in the gym”
Type of:
displace, move
cause to move or shift into a new position or place, both in a concrete and in an abstract sense

v deliver forth

pump bullets into the dummy”
Type of:
blast, shoot
fire a shot

v supply in great quantities

Pump money into a project”
Type of:
furnish, provide, render, supply
give something useful or necessary to

v flow intermittently

Type of:
gush, spirt, spout, spurt
gush forth in a sudden stream or jet

v question persistently

“She pumped the witnesses for information”
Type of:
query, question
pose a question

n the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions move the blood through the body

heart, ticker
athlete's heart
enlarged heart commonly found among athletes trained for endurance
biauriculate heart
a heart (as of mammals and birds and reptiles) having two auricles
Type of:
internal organ, viscus
a main organ that is situated inside the body

n a low-cut shoe without fastenings

spectator, spectator pump
a woman's pump with medium heel; usually in contrasting colors for toe and heel
Type of:
footwear shaped to fit the foot (below the ankle) with a flexible upper of leather or plastic and a sole and heel of heavier material

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