growan
Grow"an, n. Etym: [Cf. Arm. grouan gravel, Corn. grow gravel, sand.] (Mining.) Defn: A decomposed granite, forming a mass of gravel, as in tin lodes in Cornwall.
Grow"an, n. Etym: [Cf. Arm. grouan gravel, Corn. grow gravel, sand.] (Mining.) Defn: A decomposed granite, forming a mass of gravel, as in tin lodes in Cornwall.