Source : Webster's Revised Unabridged Dictionary (1913)

Offal \Of"fal\, n. [Off + fall.]
   1. The rejected or waste parts of a butchered animal.

   2. A dead body; carrion. --Shak.

   3. That which is thrown away as worthless or unfit for use;
      refuse; rubbish.

            The off als of other profession.      --South.

Source : WordNet®

offal
     n : viscera and trimmings of a butchered animal often considered
         inedible by humans