Flucan \Flu"can\, n. (Mining) Soft clayey matter in the vein, or surrounding it. [Written also {flookan}, {flukan}, and {fluccan}.] [1913 Webster]
Flukan \Flu"kan\, n. (Mining) Flucan. [1913 Webster]
Flookan \Flook"an\, Flukan \Flu"kan\, n. (Mining) See {Flucan}. [1913 Webster]