“Merry-go-round” is a noun with two main meanings in English.merriam-webster+1
First, it means a circular amusement ride with seats (often shaped like horses or other animals) that goes round and round, also called a carousel or, in British English, a roundabout.
Second, it is used figuratively for a continuous series of repeated activities or events, especially when they feel busy, confusing, or hard to escape, as in “the merry-go-round of meetings.”dictionary.cambridge+3