Grabbed by green ogre in film, I scream (6)
I believe the answer is:
shriek
'scream' is the definition.
(I know that scream can be written as shriek)
'grabbed by green ogre in film i' is the wordplay.
'grabbed by' is an insertion indicator (inserted letters are grabbed inside).
'green ogre in film' becomes 'Shrek' (film character).
'shrek' placed around 'i' is 'SHRIEK'.
(Other definitions for shriek that I've seen before include "Sharp piercing cry" , "Yell, screech" , "Shrill cry or scream" , "A high-pitched shrill cry" , "Scream of pain or delight" .)