Charlie having turn on large merry-go-round (8)
I believe the answer is:
carousel
'merry-go-round' is the definition.
(synonyms)
'charlie having turn on large' is the wordplay.
'charlie' becomes 'c' (phonetic alphabet: alpha, bravo, charlie etc.).
'having' says to put letters next to each other.
'turn on' becomes 'arouse' (synonyms).
'large' becomes 'L' (eg in clothes sizes).
'c'+'arouse'+'l'='CAROUSEL'
(Other definitions for carousel that I've seen before include "Musical - merry-go-round" , "Conveyer belt for arriving air travellers' luggage" , "Rotating conveyor" , "Baggage conveyor" , "magazine for circulation" .)