#residue  matter that remains after something has been removed
  supertype:  substance__matter  that which has mass and occupies space; "an atom is the smallest indivisible unit of matter"
  subtype:  ash  the residue that remains when something is burned
     subtype:  fly_ash__flyash  fine solid particles of ash that are carried into the air when fuel is combusted
     subtype:  bone_ash  ash left when bones burn; high in calcium phosphate; used as fertilizer and in bone china
  subtype:  cottonseed_cake__cotton_cake  the solid matter remaining after oil has been pressed from cottonseeds
  subtype:  dottle  the residue of partially burnt tobacco left caked in the bowl of a pipe after smoking

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