Dead section of great restaurant (2,4)
I believe the answer is:
at rest
'dead' is the definition.
(similar in meaning)
'section of great restaurant' is the wordplay.
'section of' indicates a hidden word.
'AT REST' is hidden in the letters of 'great restaurant'.
(Other definitions for at rest that I've seen before include "Free from trouble or anxiety" , "Not moving, free from anxiety" , "Still" , "Immobile" , "departed" .)