köken: Probably borrowed from western Lombard parrucca. Compare the phonetic changes of intervocalic -L- into -R- of Italian parlare and Sicilian parrari.
köken: Uncertain; according to the OED, possibly related to Latin pilus (“hair”), but there are phonetic difficulties. It could instead be related to parrocchetto (“parakeet”), referring to the feathers. Compare French perruque.