Chucked, we are told, in high chair (6)
I believe the answer is:
throne
'high chair' is the definition.
(I've seen this in another clue)
'chucked we are told' is the wordplay.
'chucked' becomes 'thrown' (I've seen this before).
'we are told' shows a homophone (sound like).
'thrown' sounds like 'THRONE'.
'in' is the link.
(Other definitions for throne that I've seen before include "Seat of royal power" , "heads" , "Oh rent out this seat" , "Royalty sits on it" , "Monarch's seat" .)