American big wheel in fair entertainment (6)
I believe the answer is:
ferris
'american big wheel' is the definition.
'Ferris' can be an answer for 'wheel' (thesaurus). I am not certain of the 'american big' bit.
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for ferris that I've seen before include "Big passenger-carrying wheel at circus or funfair" , "Wheel such as the Eye" , "Kind of wheel" , "Inventor of fairground wheel ride" , "Giant revolving wheel at funfair" .)