desert varnish

desert varnish

noun
the dark, lustrous coating or crust, usually of manganese and iron oxides, that forms on rocks, pebbles, etc., when exposed to weathering in the desert.
Also called desert polish.


Origin:
1900–05
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source Link To desert varnish

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Desert varnish is always a great word to know.
So is slumgullion. Does it mean:
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
a stew of meat, vegetables, potatoes, etc.
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