1. noun /pʌmp/
a) A device for moving or compressing a liquid or gas.
This pump can deliver 100 gallons of water per minute.
b) An instance of the action of a pump; one stroke of a pump; any action similar to pumping
It takes thirty pumps to get 10 litres ; he did 50 pumps of the weights.
2. verb /pʌmp/
a) To use a pump to move (liquid or gas).
Ive pumped over 1000 gallons of water in the last ten minutes.
b) (often followed by up) To fill with air.
He pumped up the air-bed by hand, but used the service station air to pump up the tyres.
Wikipedia foundation.