Definitions of running:

• noun:   the act of administering or being in charge of something

  Example: "He has responsibility for the running of two companies at the same time"

• noun:   the state of being in operation

  Example: "The engine is running smoothly"

• noun:   the act of running; traveling on foot at a fast pace
• noun:   the act of participating in an athletic competition involving running on a track
• noun:   (American football) a play in which a player runs with the ball

  Example: "The coach put great emphasis on running"

• name:  A surname (very rare: popularity rank in the U.S.: #19459)