The plural form; multiple instances of feathered arrow components or multiple processes of attaching feathers to arrows.
Simple plural of 'fletching' (the gerund noun form of 'fletch'). Adding '-s' creates the plural when referring to multiple sets of feathers or multiple acts of the fletching process.
The plural appears frequently in historical texts describing arrow production—a fletcher might produce dozens of 'fletchings' daily. Medieval warfare efficiency partially depended on how quickly craftspeople could mass-produce properly fletchered arrows.
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