favillous

from The Collaborative International Dictionary of English v.0.48

favillous \fa*vil"lous\, a. [L. favilla sparkling or glowing
   ashes.]
   Of or pertaining to ashes. [Obs.]
   [1913 Webster]

         Light and favillous particles.           --Sir T.
                                                  Browne.
   [1913 Webster]