elvan
Elv"an, a. 1. Pertaining to elves; elvish. 2. (Mining) Defn: Of or pertaining to certain veins of feldspathic or porphyritic rock crossing metalliferous veins in the mining districts of Cornwall; as, an elvan course. Elv"an, Elv"an*ite, n. Defn: The rock of an elvan vein, or the elvan vein itself; an elvan course.