Stocking band (6)
I believe the answer is:
garter
'stocking band' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for garter that I've seen before include "Band worn on leg" , "- Belt; - snake; - stitch" , "Band to keep a stocking or sleeve up" , "Band around the leg or arm" , "Support for a stocking" .)