the wingless female of any of several velvet ants, especially Dasymutilla occidentalis, of the southern U.S., which inflicts a painful sting.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use cow killer in a sentence
He told me about a big grizzly cow-killer being chased and shot in Chevelon Canyon.Tales of lonely trails | Zane Grey
Hearing the cries of the sacred animals he rushed to their assistance, but the cow-killer was aided by his friends.