köken: Borrowed from Low German Fluse, from Middle Low German vlūs (“sheepskin”) or a derivative thereof, ultimately related to Proto-West Germanic *fleus (“fleece”). The same word from an earlier borrowing is Flause (“illusion”), making these doublets along with Flausch.
aile: Flusengitter, Flusensieb
Mein Hemd ist voller Flusen, seitdem du es gewaschen hast.
köken: Unknown, perhaps a Germanic (possibly Frankish) borrowing, from Proto-West Germanic *felt. See also Italian and Portuguese felpa, Occitan feupo, Catalan pelfa.
köken: Maybe from Old French felpe, feupe, of uncertain origin, but possibly from Late Latin faluppa (“straw, fiber, chip”) (perhaps of Germanic origin and borrowed from Frankish *felt), or from earlier ferpe, metathesized from fibra.
köken: From Proto-Germanic *fnukaz, cognate with Swedish fnåk, Swedish fnugg, Swedish fnagg, Norwegian fnokk, and Icelandic fnykur. The ultimate origin is obscure, but perhaps an expressive or imitative formation. Compare also English fluff.
köken: From Old Galician-Portuguese (the derived form felpudo is already attested in the 13th century), probably from Old French felpe, feupe, of uncertain origin, but possibly from Late Latin faluppa (“straw, fiber, chip”) (perhaps of Germanic origin and borrowed from Frankish *felt).