#ounce  a unit of weight equal to one sixteenth of a pound or 16 drams or 28.349 grams
  supertype:  #avoirdupois_unit__avoirdupoisunit  any of the units of the avoirdupois system of weights
  part of:  #lb
  part:  #dram  1/16 ounce or 1.771 grams
     part:  #grain.avoirdupois_unit  1/7000 pound; equals a troy grain or 64.799 milligrams

No statement uses or specializes #ounce; click here to add one.