carousel
Synonym discussion
Sense: noun/1
For sense 1, 'carousel' is the neutral word for the circular ride with horses or other seats that moves around on a flat platform. 'Merry-go-round' is very close and is often interchangeable, especially in American English, though it can sound slightly more child-focused or old-fashioned. A 'Ferris wheel' is a different ride because people sit in hanging cars on a tall wheel that turns vertically. A 'roller coaster' is different again because it runs along tracks with drops and sharp turns. If a child wants the gentle ride with music and painted animals, 'carousel' or 'merry-go-round' is the natural choice.
Etymology
'Carousel' came into English through French 'carrousel', a word first used for a riding display or mock tournament. The French form is linked to Italian 'carosello', which referred to a festive horseback event. Over time, the word moved from the horse show itself to the circular fairground ride with carved animals, and later it was extended to other round moving systems such as airport baggage belts and slide trays.
First known use
1650
1650, in the meaning defined at sense 1