Dialect spoken in Liverpool (6)
I believe the answer is:
'dialect spoken in liverpool' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for scouse that I've seen before include "What they speak in Liverpool?" , "another city's dialect" , "(Someone) from Liverpool" , "Liverpudlian (stew)" , "Slang for native of Liverpool" .)