The meaning of COW KILLER is the wingless female of certain wasps of the family Mutillidae; especially : the large red and black velvet ant (Dasymutilla occidentalis) that has a severe sting.
I'm not a fan of wasps at all. I've been stung enough by these things so many times that I've grown to really dislike them. I am grateful, however, that none of those stings have come from the insects known as the "Cow Killer." These six-legged, black, red, and orange pestspa...