Cafe with new dire surroundings restored (5)

I believe the answer is:
diner
'cafe' is the definition.
(thesaurus)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for diner that I've seen before include "(One using) restaurant car" , "Restaurant customer" , "Restaurant client" , "American restaurant" , "One taking a meal" .)
