v.
    - obtain or secure (something favourable). 
▸benefit:
 managers would gain from greater openness.
 - reach or arrive at (a destination). 
▸
(gain on)
 come closer to (a person or thing pursued).
 - increase the amount or rate of (weight, speed, etc.). 
▸increase in value.
 ▸(of a clock or watch) become fast by (a specific amount of time).
 - 
(gain in)
 increase in (a quality):
 canoeing is gaining in popularity.
 
n.
   - a thing that is gained.
 - an increase in wealth or resources.
 - the factor by which power or voltage is increased in an amplifier or other electronic device, usually expressed as a logarithm.
 
 
  Derivative
  
  Etymology
  C15 (orig. in the sense ‘booty’): from OFr. gaigne (n.), gaignier (v.), of Gmc origin.