#stone.avoirdupois_unit  (British) an avoirdupois unit used to measure the weight of a human body; equal to 14 pounds
  supertype:  avoirdupois_unit__avoirdupoisunit  any of the units of the avoirdupois system of weights
  part:  lb
  part of:  quarter.avoirdupois_unit  $('p' #lb removed since already part of stone.avoirdupois_unit)$ a quarter of a hundredweight (25 pounds)
     part of:  short_hundredweight__shorthundredweight__hundredweight__cwt__centner__quintal  a United States unit of weight equivalent to 100 pounds
        part of:  short_ton__shortton__ton__net_ton__netton  a United States unit of weight equivalent to 2000 pounds
           part of:  kiloton.avoirdupois_unit  one thousand tons
              part of:  megaton.avoirdupois_unit  one million tons

No statement uses or specializes stone.avoirdupois_unit; click here to add one.