Don't eat in bar round front of restaurant (6)
I believe the answer is:
starve
'don't eat' is the definition.
I can't judge whether this definition defines the answer.
'in bar round front of restaurant' is the wordplay.
'in' is an insertion indicator.
'bar' becomes 'stave' (I've seen this before).
'round front of restaurant' becomes 'r' (I can't justify this - if you can you should give a lot more credence to this answer).
'stave' enclosing 'r' is 'STARVE'.
Can you help me to learn more?
(Other definitions for starve that I've seen before include "Deprive of food" , "Suffer from want of food" , "Go hungry" , "Die from lack of food" , "Suffer from food deprivation" .)