Large stomach of kitten or mouse (8)

I believe the answer is:

enormous

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'large' is the definition.
(similar in meaning)

'of kitten or mouse' is the wordplay.
'of' indicates the answer is hidden within the clue.
'ENORMOUS' can be found hidden inside 'kitten or mouse'.

'stomach' acts as a link.
I am not very happy about this link. It may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for enormous that I've seen before include "Giant" , "Massive" , "Huge, really big" , "Tremendous, gigantic" , "Gross" .)

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

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