Funfair attraction (5-2-5)
(Other definitions for merry-go-round that I've seen before include "Whirligig" , "Language widely spoken in India" , "Fairground ride" , "Carousel" , "Fairground attraction" .)
'funfair attraction' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ride that I've seen before include "Take a trip" , "Travel upon" , "To control" , "Fairground entertainment" , "Fairground attraction; go on horseback" .)