pirn /pɜː(ɹ)n/noun 3verb 1forms 3 noun3 •A cone-shaped spool or bobbin on which thread or yarn is wound, used most often for weaving. •The amount of thread wound on a shuttle or reel. •(dialect) A trouble or difficulty deliberately created."What'll we do with the wee deil?" said she. "I'll work it a pirn," replied the lass. — 1828 verb1 •To wind (yarn) onto a pirn, usually by means of a pirn winder. formspirned · pirning · pirns