Reel — spool (6)
I believe the answer is:
bobbin
This clue is a double definition.
'reel' is the first definition.
(I know that reel can be written as bobbin)
'spool' is the second definition.
(synonyms)
(Other definitions for bobbin that I've seen before include "about which a yarn is spun" , "It carries wound yarn" , "Reel for yarn" , "Shuttle" , "A spool for winding yarn" .)