Definitions
1.VerbTo be very busy doing many different things."I don't want to run around all week getting everything ready for the holidays."
2.VerbTo go from place to place.
3.VerbTo move from one end of the consist to the other, so as to pull the train in the opposite direction.
4.VerbTo cheat; to be unfaithful to a romantic partner.
5.VerbTo change one's position on the court to hit a forehand rather than a backhand, or vice versa.
6.VerbUsed other than figuratively or idiomatically: see run, around."The children ran around in the playground."
7.NounAlternative form of runaround.
8.NounUsed other than figuratively or idiomatically: see run, around."We let the dog off the lead so it could have a run around."