A device for pumping air into or out of an enclosed space.
- An air pump circulates a continuous flow of air through the device, replacing any air that is lost through the surface's pores.
- I'm not going to bore you with the details of what we did but I will say that I lugged the air pump and extension cord up from the basement.
- A car is parked under our window and has a air pump attached to it which is left to blow up the tyres while my neighbour and his mechanic friends work on another car.
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