Path back from shut bar (5)
I believe the answer is:
trail
'path' is the definition.
(I know that trail is a type of path)
'back from shut bar' is the wordplay.
'back from' suggests the final letters (the letter at the back of the word).
'bar' becomes 'rail' (rail is a kind of bar).
The final letter of 'shut' is 't'.
't'+'rail'='TRAIL'
(Other definitions for trail that I've seen before include "Scent or track followed in hunting" , "Country path; follow" , "Spoor - lag behind" , "Stalk" , "Drag behind" .)