pump1
  
  n.
  - a mechanical device using suction or pressure to raise or move liquids, compress gases, or force air into inflatable objects.
 - Physiology  a mechanism in living cells by which specific ions are moved through a cell membrane against a concentration gradient.
 
v.
    - force (liquid, gas, etc.) to move by or as if by means of a pump. 
▸move in spurts as though driven by a pump.
 ▸
(pump something out)
 produce or emit something in large quantities or amounts.
 - 
(often pump something up)
 fill (something) with liquid, gas, etc. 
▸
(pump something up)
 informal turn up the volume of music.
 ▸
[as adj. pumped up]
 informal very enthusiastic or excited.
 - move or cause to move vigorously up and down.
 - informal try to elicit information from (someone) by persistent questioning.
 
 
  Phrase
  
    
      - pump iron
 informal exercise with weights. 
    
   
  Derivative
  
  Etymology
  ME: rel. to Du. pomp ‘ship's pump’, prob. partly of imitative origin.