muscle

• ing. kas.
  
  * one of many tissues in the body that can tighten and relax to produce movement.
  ex:
  - neck/back/leg stomach muscles.
  - these exercises build muscle and increase stamina.
  
  * the power to do difficult things or to make people behave in a certain way.
  ex:
  - this magazine has consideable financial muscle and can afford to pay top journalist.