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The Collaborative International Dictionary of English v.0.48 (gcide)

Rubble \Rub"ble\, n. [From an assumed Old French dim. of robe
See {Rubbish}.]
1. Water-worn or rough broken stones; broken bricks, etc.,
used in coarse masonry, or to fill up between the facing
courses of walls.
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Inside [the wall] there was rubble or mortar.
--Jowett
(Thucyd.).
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2. Rough stone as it comes from the quarry; also, a
quarryman's term for the upper fragmentary and decomposed
portion of a mass of stone; brash. --Brande & C.
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3. (Geol.) A mass or stratum of fragments or rock lying under
the alluvium, and derived from the neighboring rock.
--Lyell.
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4. pl. The whole of the bran of wheat before it is sorted
into pollard, bran, etc. [Prov. Eng.] --Simmonds.
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{Coursed rubble}, rubble masonry in which courses are formed
by leveling off the work at certain heights.
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