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Meaning of sastruga

sas•tru•ga

Pronunciation: (sas'tru-gu, sä'stru-, sa-str'-, sä-), [key]
— pl. -gi
  1. Usually,ridges of snow formed on a snowfield by the action of the wind.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.