Diluvium

from The Collaborative International Dictionary of English v.0.48

Diluvium \Di*lu"vi*um\, n.; pl. E. {Diluviums}, L. {Diluvia}.
   [L. diluvium. See {Dilute}, {Deluge}.] (Geol.)
   A deposit of superficial loam, sand, gravel, stones, etc.,
   caused by former action of flowing waters, or the melting of
   glacial ice.
   [1913 Webster]

   Note: The accumulation of matter by the ordinary operation of
         water is termed alluvium.
         [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

35 Moby Thesaurus words for "diluvium":
      alluvion, alluvium, ash, cinder, clinker, debris, deposit,
      deposition, deposits, detritus, draff, dregs, drift, dross, ember,
      feces, froth, grounds, lees, loess, moraine, offscum, precipitate,
      precipitation, scoria, scree, scum, sediment, settlings, silt,
      sinter, slag, smut, soot, sublimate

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