Bill eats out at a famous French prison (8)
I believe the answer is:
bastille
'a famous french prison' is the definition.
'bastille' can be an answer for 'prison' (I've seen this before). I'm unsure of the 'a famous french' bit.
'bill eats out' is the wordplay.
'out' indicates anagramming the letters (out can mean wrong or inaccurate).
'bill'+'eats'='billeats'
'billeats' anagrammed gives 'BASTILLE'.
'at' acts as a link.
Can you help me to learn more?
(Other definitions for bastille that I've seen before include "Fortress stormed on July 14, 1789" , "Parisian fortress" , "French jail" , "Fortress in Paris" , "Notorious Paris prison stormed in French revolution" .)