There's nothing to hold down such a point of view (7)
I believe the answer is:
opinion
'a point of view' is the definition.
(I've seen this in another clue)
'there's nothing to hold down' is the wordplay.
'there's nothing' becomes 'o' (I've seen this in other clues).
'to' is a charade indicator (letters next to each other).
'hold down' becomes 'pinion' (pinioning is a kind of holding. I am not sure about the 'down' bit.).
'o'+'pinion'='OPINION'
'such' is the link.
Can you help me to learn more?
(Other definitions for opinion that I've seen before include "Unproven belief" , "View, judgement" , "school of thought" , "Belief or conviction" , "Standpoint" .)