Source : Webster's Revised Unabridged Dictionary (1913)

Soapstone \Soap"stone`\, n.
   See {Steatite}, and {Talc}.

Source : WordNet®

soapstone
     n : a soft heavy compact variety of talc having a soapy feel;
         used to make hearths and tabletops and ornaments [syn: {soaprock},
          {soap-rock}, {steatite}]