Selected passage right in bar (7)
I believe the answer is:
excerpt
'selected passage' is the definition.
(I've seen this before)
'right in bar' is the wordplay.
I cannot really understand how this works, but
'right' could be 'r' (abbreviation) and 'r' is present in the answer.
'bar' could be 'except' (both can mean 'not including') and 'except' is present in the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for excerpt that I've seen before include "scrap?" , "part of article, perhaps" , "Textual passage" , "bit of work" , "Quote" .)