Jafar's parrot in "Aladdin" (4)
I believe the answer is:
iago
'jafar's parrot in aladdin' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for iago that I've seen before include "Othello's enemy" , "Shakespeare's jealous villain" , "Othello's evil counsellor" , "villainous ensign" , "Othello's treacherous officer" .)