soapstone
Word family nounsoapersoapiesoapinesssoaplandsoapbarksoapberrysoapboxsoap powdersoaprootsoapstonesoapsudssoapsoapwortadverbsoapilyadjectivesoaplesssoapy
Earth sciences
soap·stone /ˈsəʊpstəʊn $ ˈsoʊpstoʊn/ noun [uncountableU] 
DHCHEa soft stone that feels like soap 皂石〔一种软岩石〕Examples from the Corpus
soapstone• They were focussed greeny-yellow eyes, like lumps of soapstone.• Once at sea level, smooth soapstone slabs had to be traversed for some distance to reach the cliff.