Same as yearn, a dialectal variant of earn.
noun.
Originally, thread of any kind spun from natural fibers, vegetable or animal, or even mineral; now, more usually, thread prepared for weaving, as distinguished from sewing-thread of any sort. The term is also applied to stout woolen thread used for knitting, etc.
noun.
Rope-yarn.
noun.
A story; a tale: often implying the marvelous or untrue: applied to a long story, with allusion to spinning yarn: as, do you expect us to believe such a yarn as that? a sailors' yarn.
noun.
Yarn made from Imperfectly carded stock.
To tell stories; spin yarns.