Air pump

an apparatus for drawing in, compressing, or exhausting air.
(initial capital letters) astronomy. the constellation antlia.
historical examples

either the air pump or steam may be employed to create a partial void in the receiver beneath the filter.
a dictionary of arts, manufactures and mines andrew ure

now place this apparatus under the receiver of an air pump and exhaust the air.
physics willis eugene tower

put the bell jar on the plate of the air pump and begin to pump the air out of it.
common science carleton w. washburne

“he has no business to faint when he’s working the air pump,” he said savagely.
the boy chums in the gulf of mexico wilmer m. ely

the divers helmet was fitted into position and the air pump started.
dave darrin and the german submarines h. irving hanc-ck

there was the fat lady who was blown up twice a day with the air pump.
jiglets walter jones

it one day occurred to m. de la croix that he ought to try an experiment upon a cat with an air pump.
the book of cats charles h. ross

the only sound from the students was the faint sound of the air pump.
batting to win lester chadwick

does not the air pump, which you used in the experiments, on pneumatics, operate upon the same principles as the sucking pump?
conversations on natural philosophy, in which the elements of that science are familiarly explained jane haldimand marcet and thomas p. jones

let us now fix it on the air pump, and exhaust the air from underneath it—you will not be alarmed if you hear a noise?
conversations on natural philosophy, in which the elements of that science are familiarly explained jane haldimand marcet and thomas p. jones

noun
a device for pumping air in or out of something