Search Result for "loess": 
Wordnet 3.0

NOUN (1)

1. a fine-grained unstratified accumulation of clay and silt deposited by the wind; 



The Collaborative International Dictionary of English v.0.48:

Loess \Loess\ (l[~e]e), n. [G. l["o]ss.] (Geol.)
   A quaternary deposit, usually consisting of a fine yellowish
   earth, on the banks of the Rhine and other large rivers.
   [1913 Webster]


WordNet (r) 3.0 (2006):

loess
    n 1: a fine-grained unstratified accumulation of clay and silt
         deposited by the wind