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cow killer

noun
1.
the wingless female of any of several velvet ants, especially Dasymutilla occidentalis, of the southern U.S., which inflicts a painful sting.
Origin of cow killer
1885-1890
An Americanism dating back to 1885-90
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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8
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