(pump) noun
A mechanical device for raising, circulating, exhausting, or compressing a liquid or gas by drawing or pressing it through apertures and pipes.
—v.t.
1. To raise with a pump, as water or other liquid.
2. To remove the water, etc., from.
3. To inflate with air by means of a pump.
4. To propel, discharge, force, etc., from or as if from a pump: The heart pumps blood.
5. To cause to operate in the manner of a pump or pump handle.
6. To question or obtain information from persistently or subtly: to pump a witness.
7. To obtain (information) in such a manner.
—v.i.
8. To work a pump; raise water or other liquid with a pump.
9. To move up and down like a pump or pump handle. [<MDu. pompe, prob. <Sp. bomba; prob. ult. imit.]
—pump′er noun

(pump) noun
A low–cut slipper without a fastening, having either a high or a low heel. [? <F pompe pomp]