Spin or twist together (5)
I believe the answer is:
twine
I believe this clue is a double definition.
'spin' is the first definition.
(I know that spin is a kind of the twine)
'twist together' is the second definition.
(synonyms)
(Other definitions for twine that I've seen before include "Thin cord" , "Curl; string" , "can get into knots" , "Garden string" , "wind" .)