Definition of cow killer
: 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
Test Your Vocabulary
Odd Habits and Quirks
-
- Which of the following best describes an easily irritated person?

Test your visual vocabulary with our 10-question challenge!
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share cow killer