n. [ Named after Karl Giesecke. ] (Min.) A mineral occurring in greenish gray six-sided prisms, having a greasy luster. It is probably a pseudomorph after elæolite. [ 1913 Webster ]
[こりようかい, koriyoukai] (n) foxes and badgers (which used to be believed to bewitch humans) and all sorts of bogies; a sly fellow who does evil by stealth