PIPESTONE
PIPESTONE Pipe "stone `, n.
pipestone
pipe stone |ˈpīpˌstōn ˈpaɪpstoʊn | ▶noun hard red clay (catlinite ) used by North American Indians for tobacco pipes.
pipe |stone |ˈpʌɪpstəʊn | ▶noun [ mass noun ] hard red clay used by North American Indians for tobacco pipes.