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rocky mountain locust

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Rocky Mountain locust

–noun
a migratory locust, Melanoplus spretus, that occurs in North America, esp. the Great Plains, where swarms cause great damage to crops and other vegetation.
Also called Rocky Mountain grasshopper.


Origin:
1875–80, Americanism
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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