Crossword Genius

Fairground attraction where rifles exploded (6,5)

Ross

I believe the answer is:

ferris wheel

I'm a little stuck... Click here to teach me more about this clue!

'fairground attraction' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.

'where rifles exploded' is the wordplay.
'exploded' is an anagram indicator.
'where'+'rifles'='whererifles'
'whererifles' anagrammed gives 'FERRIS WHEEL'.

Can you help me to learn more?

(Other definitions for ferris wheel that I've seen before include "Attraction at fair" , "Fairground ride" , "Funfair feature and London Millennium attraction" , "London Eye, for example" .)

I've seen this clue in The Times.
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