Nobel's prize (1,1,1)

I believe the answer is:

o b e

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

This clue could be a double definition.

'nobel's' is the first definition.
Both the answer and definition are singular nouns.
Maybe there's a link between them I don't understand?

'prize' is the second definition.
Both the definition and answer are singular nouns.
Maybe you can see a link between them that I can't see?

Can you help me to learn more?

I've seen this clue in The Mirror.

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