Definition of "yarn"

noun:
- A twisted strand of fiber used for knitting or weaving.
  
  from Wiktionary, Creative Commons Attribution/Share-Alike License
- Bundles of fibers twisted together, and which in turn are twisted in bundles to form strands, which in their turn are twisted or plaited to form rope.
  
  from Wiktionary, Creative Commons Attribution/Share-Alike License
- A story, a tale, especially one that is incredible.
  
  from Wiktionary, Creative Commons Attribution/Share-Alike License
verb:
- To tell a story.
  
  from Wiktionary, Creative Commons Attribution/Share-Alike License