Sensational headline (8)
I believe the answer is:
screamer
'sensational headline' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for screamer that I've seen before include "Sensational newspaper headline - mere scar (anag)" , "South American bird with loud, harsh cry" , "she'll give voice" , "Remarkable thing; noisy person; large water bird" , "powerful shot" .)