furfur
a particle of dandruff
archaic, countable
dandruff
archaic, uncountable
‘Aye,’ said WS, still in bed, scratching his baldness, examining the furfur in his fingernails.
Where it comes from
From Latin furfur (“bran”), reduplication of *fur, from Proto-Indo-European *gʰur-, metathesis of *gʰrus- (compare Lithuanian grū́sti (“to grind (barley)”), Ancient Greek χρώς (khrṓs, “skin, husk”)).
Adapted from the Wiktionary entry furfur (CC BY-SA 4.0).