air pump

noun

1. an apparatus for drawing in, compressing, or exhausting air.
2. Air Pump, Astronomy. the constellation Antlia.

air pump

noun

1. a device for pumping air in or out of something

Word History and Origins

Origin of air pump¹

First recorded in 1650–60

Example Sentences

Many air mattresses now come with built-in electric air pumps, which are very convenient, provided you’re near a power outlet.

From Popular-Science

What’s nice is that many air mattress manufacturers are producing air pumps that are quieter than previous models, since some older pumps can be quite loud.

From Popular-Science

However, like the EasyStay, the QuickBed also lacks an air pump.

From Popular-Science

The structure stands firm with the help of three individual air chambers with valves that are compatible with electric air pumps, allowing you a quick and easy way to inflate and deflate.

From Popular-Science

A witness told police that she heard a popping sound at the gas station and saw two or three men around the air pump, one of whom pointed a silver handgun at Nix before fleeing the scene.

From Washington Post

At Wheal Alfred they have a 64-inch cylinder; the air-pump is 20 inches, and the stroke is half that of the engine.

From Project Gutenberg

A connecting rod worked a balance-beam, which worked the air-pump, feed-pump, and plug-rod for moving the valves.

From Project Gutenberg

The engine was fixed directly over the pump-rods in the shaft, using neither main beam nor air-pump.

From Project Gutenberg

Wheal Concord pumping engine, in 1827 had a similar air-pump.

From Project Gutenberg

The atmosphere pressing on the piston like steam, the air is drawn from the pipes by a large air-pump and steam-engine.

From Project Gutenberg