Noun

(-)

Rubble, wreckage, scattered remains of something destroyed.

* {{quote-news, year=2012, date=December 21, author=David M. Halbfinger, Charles V. Bagli and Sarah Maslin Nir, title=On Ravaged Coastline, It’s Rebuild Deliberately vs. Rebuild Now, work=New York Times citation

, passage=His neighbors were still ripping out debris . But Mr. Ryan, a retired bricklayer who built his house by hand 30 years ago only to lose most of it to Hurricane Sandy, was already hard at work rebuilding. }}

Litter and discarded refuse.

* {{quote-magazine, date=2013-07-20, volume=408, issue=8845, magazine=(The Economist)

, title= Welcome to the plastisphere , passage=[The researchers] noticed many of their pieces of [plastic marine] debris sported surface pits around two microns across. Such pits are about the size of a bacterial cell. Closer examination showed that some of these pits did, indeed, contain bacteria, […].}}

The ruins of a broken-down structure

(geology) Large rock fragments left by a melting glacier etc.

Noun

The broken remains of an object, usually rock or masonry.

* {{quote-magazine, date=2013-06-29, volume=407, issue=8842, page=28, magazine=(The Economist)

, title= High and wet , passage=Floods in northern India, mostly in the small state of Uttarakhand, have wrought disaster on an enormous scale.

(geology) A mass or stratum of fragments of rock lying under the alluvium and derived from the neighbouring rock.

(Lyell)

(UK, dialect, in the plural) The whole of the bran of wheat before it is sorted into pollard, bran, etc.

(Simmonds)