Run into bar but eat nothing (6)
I believe the answer is:
starve
'eat nothing' is the definition.
(I've seen this before)
'run into bar' is the wordplay.
I cannot quite see how this works, but
'run' could be 'r' (cricket abbreviation) and 'r' is found within the answer.
'bar' could be 'stave' (I've seen this before) and 'stave' is located in the remaining letters.
This accounts for all the letters.
This explanation may well be incorrect...
'but' acts as a link.
Can you help me to learn more?
(Other definitions for starve that I've seen before include "Go without food" , "Die from lack of food" , "Deprive of food" , "Vaster (anag)" , "Fail to take in" .)