Sesame Street Grouch (5)
I believe the answer is:
oscar
'sesame street grouch' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for oscar that I've seen before include "Film-prize statuette" , "Comms code for "O"" , "feature of award ceremony" , "to wit involved in row" , "Cinema award" .)