Definition of "favus"

favus

/ˈfeɪvəs/

noun
countable and uncountable, plural favi
1. (medicine) A severe, chronic infection of ringworm.
  Quotations
  The first signs of an attack of favus are small, pale, irregular, cup-like spots on the comb or wattles, generally appearing on the comb first.
  1901 July 19, “Favus in Poultry”, in The Agricultural Journal and Mining Record‎, volume 4, number 10, page 317
2. A tile or flagstone cut into a hexagonal shape to produce a honeycomb pattern.