Possible Clues:

• Fine cords or twisted fibres
• Thin fibres
• They're for sowing, by the sound of them, as one does in volume at last
• Sounds as if one might have sown them with the strands
• Clothes (slang)
• Passes thin line through series of linked posts
• Following detailed article peruses yarns
• Steps to include foremost of heroes in storylines
• What a tailor's spools contain
• Informal term for clothing