Narrow piece in a newspaper edition is barred (7)
I believe the answer is:
striped
'is barred' is the definition.
(thesaurus)
'narrow piece in a newspaper edition' is the wordplay.
I cannot quite see how this works, but
'piece' could be 'strip' (strip is a kind of piece) and 'strip' is found within the answer.
'edition' could be 'ed' (abbreviation) and 'ed' is present in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for striped that I've seen before include "Red tips (anag.)" , "like Shere Khan" , "streaked" , "Decorated with lines" , "Like a zebra" .)