Source : Webster's Revised Unabridged Dictionary (1913)

Destructor \De*struct"or\, n.
   A furnace or oven for the burning or carbonizing of refuse;
   specif. (Sewage Disposal), a furnace (called in full

   {refuse destructor}) in which the more solid constituents of
      sewage are burnt. Destructors are often so constructed as
      to utilize refuse as fuel.