Dave's outside bar before woman who's not appeared yet (9)

I believe the answer is:

debutante

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'woman who's not appeared yet' is the definition.
I can't judge whether this defines the answer.

'dave's outside bar before' is the wordplay.
'outside' suggests removing the centre.
'bar' becomes 'but' (both can mean 'except for').
'before' becomes 'ante' (prefix meaning before).
'dave' with its middle taken out is 'de'.
'de'+'but'+'ante'='DEBUTANTE'

Can you help me to learn more?

(Other definitions for debutante that I've seen before include "Young woman entering society" , "Maiden speaker" , "One coming out" , "One entering society for the first time" , "socialite" .)

I've seen this clue in The Independent.

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