pipestone

A heat-hardened, compacted, red or pink clay stone used by Native American peoples for making tobacco pipes.

Same as catlinite.

The cast-iron prism lying on the back-stone of a lead-ore hearth and containing an opening for the twyer.

A kind of clay slate, carved by the Indians into tobacco pipes. Cf. catlinite.

A hard, red clay used by Native Americans for making tobacco pipes