1.
Go about hurriedly here and there, as in I have been running around all day so I want to stay home tonight and relax. [Early 1900s]
2.
Also,
run around with. Associate or consort with socially, as in At college she began to run around with a very liberal group. [Late 1800s]
3.
Be sexually unfaithful, as in She caught him running around just once too often and finally sued for divorce. [Early 1900s]



