Back out, lady! (5)

I believe the answer is:

ninon

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This clue could be a double definition.

'back out' is the first definition.
The definition suggests a singular noun which matches the answer.

'lady' is the second definition.

Can you help me to learn more?

(Other definitions for ninon that I've seen before include "thin fabric" , "Lightweight silk fabric" , "delicate material" , "fine material" , "Fine, strong, silky fabric" .)

I've seen this clue in the Evening Standard.

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