Newshound referring to carrier (8)
I believe the answer is:
reporter
'newshound' is the definition.
(I've seen this before)
'referring to carrier' is the wordplay.
'referring to' becomes 're' ('re' means regarding or about).
'carrier' becomes 'porter'.
're'+'porter'='REPORTER'
(Other definitions for reporter that I've seen before include "One who writes the news for the media" , "One may get a story" , "Collector of news for media" , "Newsman" , "Journo" .)