Barking setter shows way (6)
I believe the answer is:
street
'way' is the definition.
(I know that way can be written as street)
'barking setter' is the wordplay.
'barking' indicates anagramming the letters ('barking' can informally mean mad).
'setter' with letters rearranged gives 'STREET'.
'shows' is the link.
(Other definitions for street that I've seen before include "See 17" , "Way < in which common man is" , "City thoroughfare" , "Built-up road" , "Public road in a conurbation" .)