1.A destroyer. (R.) "Fire, the destructor and the artificial death of things."
2.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.
3.(Computers) In object-oriented programming, a function which destroys an object which was previously created by a different function.