Dine out, entertaining a girl ... (5)
I believe the answer is:
diane
'a girl' is the definition.
'dine out entertaining' is the wordplay.
'out' means one lot of letters goes inside another.
'entertaining' becomes 'a' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'dine' going around 'a' is 'DIANE'.
Can you help me to learn more?
(Another definition for diane that I've seen is " woman".)
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