Browbeat hospital over shocking treatment placed on heads of older residents (6)
I believe the answer is:
hector
'browbeat' is the definition.
(synonyms)
'hospital over shocking treatment placed on heads of older residents' is the wordplay.
'hospital' becomes 'h'.
'over' means one lot of letters go next to another.
'shocking treatment' becomes 'ect' (electro-convulsive therapy).
'placed on' is a charade indicator (letters next to each other).
'heads of' says to take the initial letters.
The first letters of 'older residents' is 'or'.
'h'+'ect'+'or'='HECTOR'
(Other definitions for hector that I've seen before include "Boy - bully" , "Trojan prince killed by Achilles at Troy - browbeat him" , "Intimidate by bullying, like Trojan prince killed by Achilles" , "Bully, intimidate or threaten" , "do as Harrier does" .)