A French bloke eats high-class cream (7)
I believe the answer is:
unguent
'cream' is the definition.
(thesaurus)
'a french bloke eats high-class' is the wordplay.
'a french' becomes 'un' ('a' in French).
'bloke' becomes 'gent' (I've seen this in other clues**).
'eats' means one lot of letters goes inside another.
'high class' becomes 'u'.
'gent' going around 'u' is 'guent'.
'un'+'guent'='UNGUENT'
(Other definitions for unguent that I've seen before include "Oily substance" , "An ointment or lubricant" , "Greasy ointment" , "Ointment, soothing salve" , "application" .)