merry-go-round

noun

1. 1

   A carousel; a pleasure ride, typically found at fairs and amusement parks, consisting of a slowly revolving circular platform on which various seats are fixed, frequently shaped like horses or other animals.

2. 2

   A piece of playground equipment consisting of a circular platform that is made to revolve by pushing while users stand on it.

3. 3

   A meaningless cycle; a bustle of activity that gets nowhere

4. 4

   A freight train of hopper goods wagons which loads and unloads its cargo while moving.