1. set in stone no longer changeable
  2. sandstone a sedimentary rock consisting of sand consolidated with some cement (clay or quartz etc.)
  3. rottenstone a weathered and decomposed siliceous limestone
  4. sunstone a translucent quartz spangled with bits of mica or other minerals
  5. stepping stone any means of advancement
  6. kidney stone a calculus formed in the kidney
  7. satin stitch flat stitches worked so closely as to resemble satin
  8. Satanist an adherent of Satan or Satanism
  9. rhinestone an imitation diamond made from rock crystal or glass or paste
  10. pudding stone a composite rock made up of particles of varying size
  11. siltstone a fine-grained sandstone of consolidated silt
  12. whinstone any of various hard colored rocks
  13. turnstone migratory shorebirds of the plover family that turn over stones in searching for food
  14. standing stone a tall upright megalith
  15. touchstone a basis for comparison
  16. stenosed abnormally constricted body canal or passage
  17. Godwin Austen a mountain peak in the Karakoram Range in northern Kashmir
  18. Rosetta Stone a part of an inscribed granite stela that was originally about six feet tall and was set up in 196 BC; the inscriptions in hieroglyphics and Demotic and Greek gave the first clues to the decipherment of Egyptian hieroglyphics
  19. whetstone a flat stone for sharpening edged tools or knives
  20. brownstone a reddish brown sandstone; used in buildings