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air pump
noun
- an apparatus for drawing in, compressing, or exhausting air.
- Air Pump, Astronomy. the constellation Antlia.
air pump
noun
- a device for pumping air in or out of something
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Word History and Origins
Origin of air pump1
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Example Sentences
At Wheal Alfred they have a 64-inch cylinder; the air-pump is 20 inches, and the stroke is half that of the engine.
A connecting rod worked a balance-beam, which worked the air-pump, feed-pump, and plug-rod for moving the valves.
The engine was fixed directly over the pump-rods in the shaft, using neither main beam nor air-pump.
Wheal Concord pumping engine, in 1827 had a similar air-pump.
The atmosphere pressing on the piston like steam, the air is drawn from the pipes by a large air-pump and steam-engine.
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