sastruga
\SAS-truh-guh, SAH-struh-, sa-STROO-, sah-\
noun
1. Usually, sastrugi. ridges of snow formed on a snowfield by the action of the wind.
Quotes
And then we ended up just outside the station, on the empty plateau, to watch a sastruga grow. In the winters, great windstorms sculpt these sastrugi into magnificent forms that can be ten feet high.
-- Gabrielle Walker, Antarctica: An Intimate Portrait of a Mysterious Continent, 2013
Origin
Sastruga is derived from the Russian term zastrugát meaning “to plane, shave down (wood).” It entered English in the mid-1800s.
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