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1. A group of things placed or thrown, one on top of the other: a heap of dirty rags lying in the corner.
2. often heaps Informal A great deal; a lot: We have heaps of homework tonight.
3. Slang An old or run-down car.
tr.v. heaped, heap·ing, heaps
1. To put or throw in a pile: heaped the clothes on the bed.
2. To fill completely or to overflowing: heap a plate with vegetables.
3. To bestow in abundance or lavishly: heaped praise on the rescuers.

[Middle English, from Old English hēap.]
Synonyms: heap, mound, pile1, stack
These nouns denote a group or collection of things lying one on top of the other: a heap of old newspapers; a mound of boulders; a pile of boxes; a stack of firewood.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


US and Canadian (of a spoonful) heaped
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in classic literature ?
"Yes, my friend, this is a reservoir in which Nature has been heaping up her wealth for centuries!
In this paper, we discuss the appropriateness of this "smoothness assumption" in the presence of heaping.
For a wide variety of reasons, heaping is common in many types of data.
2011) identified one case in which heaping led to biased estimates in a RD design, it left several important gaps in the literature.
We introduce non-random heaping by having the expected value of [Y.sub.i] vary across two data types, heaped and non-heaped, where heaped types have [R.sub.i] randomly drawn from {-100, -90, ..., 90, 100} and non-heaped types have [R.sub.i] randomly drawn from {-100, -99, ..., 99, 100}.
To explore how non-random heaping can impair estimation in settings beyond our simple DGP, we examine several alternative DGPs which allow the heaped and non-heaped types to have different means, different slopes, and different treatment effects.
This heaping results from the upward motion of particles within the material to the top of the pile.
The researchers found that for grains smaller than 1 millimeter in diameter, the amount of heaping decreases rapidly when air pressure is reduced below 1 percent of atmospheric pressure.