Don Quixote's nag (9)

I believe the answer is:

rosinante

'don quixote's nag' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for rosinante that I've seen before include "Pathetic nag" , "Don Quixote's horse" .)

I've seen this clue in the Sydney Morning Herald.

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