Accessory for stocking freezer (9)
I believe the answer is:
suspender
I believe this is a double definition.
'accessory for stocking' is the first definition.
(stockings might be worn with suspenders)
'freezer' is the second definition.
(someone freezing or suspending something)
(Other definitions for suspender that I've seen before include "material support" , "One that supports stocking" , "Strap to hold up a stocking" , "Sock support" , "Stocking-holding strap" .)