Source : Webster's Revised Unabridged Dictionary (1913)

Heap \Heap\, v. t. [imp. & p. p. {Heaped}; p. pr. & vb. n.
   {Heaping}.] [AS. he['a]pian.]
   1. To collect in great quantity; to amass; to lay up; to
      accumulate; -- usually with up; as, to heap up treasures.

            Though he heap up silver as the dust. --Job. xxvii.
                                                  16.

   2. To throw or lay in a heap; to make a heap of; to pile; as,
      to heap stones; -- often with up; as, to heap up earth; or
      with on; as, to heap on wood or coal.

Source : WordNet®

heaped
     adj : thrown together in a pile; "a desk heaped with books";
           "heaped-up ears of corn"; "ungraded papers piled high"
           [syn: {heaped-up}, {piled}, {cumulous}]