Prominent chair, with lining, lifted around base (3,8)

I believe the answer is:

ita buttrose

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'prominent chair with lining' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.

'lifted around base' is the wordplay.
I cannot really see how this works, but
'lifted' could be 'rose' (I've seen this before) and 'rose' is located in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

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

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