Did Richard III have this idea? (5)

I believe the answer is:

hunch

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'idea?' is the definition.
(hunch is a kind of idea)

I don't understand how the remainder of the clue works.

(Other definitions for hunch that I've seen before include "protuberance" , "Intuition, suspicion" , "Bend over" , "Intuitive guess" , "Idea based on intuition" .)

I've seen this clue in The Sun.

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