Run out of passage in bar (6)
I believe the answer is:
except
'in bar' is the definition.
(I've seen this before)
'run out of passage' is the wordplay.
'run' becomes 'r' (cricket abbreviation).
'out of' indicates named letters should be taken away ('out of' can mean no longer having).
'passage' becomes 'excerpt' (excerpt is a kind of passage).
'excerpt' with 'r' taken out is 'EXCEPT'.
(Other definitions for except that I've seen before include "Leaving out" , "Not including - bar" , "Other than - saving" , "Apart from, excluding" , "Exclude, take out" .)