Definition of yarns:
(n) :
(uncountable) A twisted strand of fibre used for knitting or weaving.
(n) :
(countable) A story, a tale, especially one that is incredible.
(v) :
(intransitive) To tell a story or stories, especially one that is lengthy or unlikely to be true.
(n) :
(nautical) Bundles of fibres twisted together, and which in turn are twisted in bundles to form strands, which in their turn are twisted or plaited to form rope.