noun
1.
(also car·ou·sel especially in NAmE ) ( BrE also round·about ) a round platform with model horses, cars, etc. that turns around and around and that children ride on at a fairground
2.
( NAmE ) = roundabout (2)
3.
continuous busy activity or a continuous series of changing events :
He was tired of the merry-go-round of romance and longed to settle down.