The Collaborative International Dictionary
Alluviums
Alluvium \Al*lu"vi*um\, n.; pl. E. Alluviums, L. Alluvia.
[L., neut. of alluvius. See Alluvious.] (Geol.)
Deposits of earth, sand, gravel, and other transported
matter, made by rivers, floods, or other causes, upon land
not permanently submerged beneath the waters of lakes or
seas.
--Lyell.
Wiktionary
alluviums
n. (plural of alluvium English)