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Webster 1913 Edition

Noun.

[Etymol. uncertain.]

A quill or reed on which thread or yarn is wound; a bobbin; also, the wound yarn on a weaver’s shuttle; also, the reel of a fishing rod.

[Scot.]

pirn ‎(plural pirns)

a cone shaped spool or bobbin on which thread or yarn is wound used most often for weaving

pirn ‎(genitive pirni, partitive pirni)

This noun needs an inflection-table template.