Possibly fell over after question in restaurant area (5,4)
I believe the answer is:
grill room
'restaurant area' is the definition.
(area in some restaurants)
'possibly fell over after question' is the wordplay.
'possibly fell' becomes 'moor' (fell can mean a stretch of land like a moor).
'over' says the letters should be written in reverse.
'after' says to put letters next to each other.
'question' becomes 'grill' (to grill is to interrogate).
'moor' in reverse letter order is 'room'.
'room' put after 'grill' is 'GRILL-ROOM'.
'in' acts as a link.
(Other definitions for grill room that I've seen before include "Where one may eat" , "Place to eat" .)