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.
3. To form or round into a heap, as in measuring; to fill (a measure) more than even full.
Origin: as. Heapian.