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: Borrowed from German Futter in its second sense (“lining”). This meaning is preserved in the doublet φόδρα (fódra), which entered the language via Venetan fodra, itself a borrowing tracing back to Proto-Germanic *fōdrą (“sheath”), from Proto-Indo-European *peh₂- (“to protect, guard”).