/ jɑːn; NAmE jɑːrn/ noun
1.
[ U ] thread that has been spun, used for knitting, making cloth, etc.
2.
[ C ] ( informal ) a long story, especially one that is exaggerated or invented :
He used to spin yarns (= tell stories) about his time in the Army.
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IDIOMS
see pitch verb
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WORD ORIGIN
Old English gearn ; of Germanic origin, related to Dutch garen .