BBC owe cast of Silk designed by those spinning yarns (6)
I believe the answer is:
cobweb
'silk designed by those spinning yarns' is the definition.
I can't judge whether this definition defines the answer.
'bbc owe cast' is the wordplay.
'cast' indicates anagramming the letters (letters are dispersed or cast around).
'bbc'+'owe'='bbcowe'
'bbcowe' anagrammed gives 'COBWEB'.
'of' is the link.
Can you help me to learn more?
(Other definitions for cobweb that I've seen before include "Dusty silken network" , "Naturally spun network" , "Dust (and fly) collector" , "A spider's mesh" , "Feature of a dusty house - Shakespearean fairy" .)