n. A great number of persons or animals; a troop; a crowd; a multitude.n. A great number of things; a large accumulation, stock, or store of any kind; a large quantity; a great deal: as, a heap of money; the frost destroyed a heap of fruit.n. A collection of things laid in a body so as to form an elevation; a pile or raised mass: as, a heap of earth or stones. In some places a heap of limestone was formerly 4¾ cubic yards.n. In mathematics, a collection of objects all related in the same way one to another.To cast, lay, or gather in a heap; pile; accumulate; amass: as, to heap stones or ore: often with up or on: as, to heap up treasures; to heap on wood or coal.To round or form into a heap, as in measuring; give or fill with overflowing measure.To bestow a heap or large quantity upon.