Money that is covering either empty restaurant (9)
I believe the answer is:
brasserie
'restaurant' is the definition.
(brasserie is a kind of restaurant)
'money that is covering either empty' is the wordplay.
'money' becomes 'brass' (informal term for money).
'that is' becomes 'ie' (abbreviation for id est, 'that is' in Latin).
'covering' is an insertion indicator.
'empty' means to remove the middle letters.
'either' with its middle removed is 'er'.
'brass'+'ie'='brassie'
'brassie' placed around 'er' is 'BRASSERIE'.
(Other definitions for brasserie that I've seen before include "bar in Paris" , "bar serving food" , "Caf" , "French-style restaurant" , "eatery" .)