Notice poets turning right (6)
I believe the answer is:
poster
'notice' is the definition.
(synonyms)
'poets turning right' is the wordplay.
'turning' is an anagram indicator.
'right' becomes 'r' (abbreviation).
'poets' is an anagram of 'poste'.
'poste'+'r'='POSTER'
(Other definitions for poster that I've seen before include "Large printed bill" , "Town near Glasgow" , "Paper advertisement for topers" , "Bill or placard" , "Large advertisement" .)