Artist in northern street (5)
I believe the answer is:
ernst
'artist' is the definition.
(max ernst)
'in northern street' is the wordplay.
'in' indicates a hidden word.
'ERNST' can be found hidden inside 'northern street'.
(Other definitions for ernst that I've seen before include "Surrealist; stern (anag.)" , "Young partner" , "He painted" , "Max --, German painter" , "Max __; Dadaist" .)