Most restricted home gets object tipped inside (9)
I believe the answer is:
narrowest
'most restricted' is the definition.
'gets object tipped inside' is the wordplay.
'gets' becomes 'nest' (I can't explain this - if you can you should give a lot more credence to this answer).
'object tipped' becomes 'arrow' (eg an arrow tipped with poison).
'inside' indicates putting letters inside.
'nest' placed around 'arrow' is 'NARROWEST'.
'home' acts as a link.
This may not be right. It may be part of another bit of the clue.
(Other definitions for narrowest that I've seen before include "this escape most lucky" , "Most slender" , "Most confined" , "least with room to spread wings?" , "Slightest" .)