List in menu revamped before the Queen dined (9)
I believe the answer is:
enumerate
'list' is the definition.
(thesaurus)
'menu revamped before the queen dined' is the wordplay.
'revamped' indicates an anagram.
'before' is a charade indicator (letters next to each other).
'the queen' becomes 'er' (Elizabeth Regina).
'dined' becomes 'ate'.
'menu' anagrammed gives 'enum'.
'enum'+'er'+'ate'='ENUMERATE'
'in' is the link.
(Other definitions for enumerate that I've seen before include "Count or mention items one by one" , "Specify individually" , "List one by one" , "Count - list" .)