add. ·- a wheel bug.
2. mule killer ·add. ·- a whip scorpion.
3. mule killer ·add. ·- a walking-stick insect.
4. mule killer ·add. ·- a mantis.
5. mule killer ·add. ·- any of several arthropods erroneously supposed to kill live stock, in the southern united states, by stinging or by being swallowed;.