The Collaborative International Dictionary of English v.0.48:

Crizzel \Criz"zel\ (kr[i^]z"z'l), n. [Cf. grizzle darkish gray,
   or G. griselig gravelly, granular, speckled.]
   A kind of roughness on the surface of glass, which clouds its
   transparency. [Written also crizzeling and crizzle.]
   [1913 Webster]