mule killer

mule killer is a   Noun

Definition:

[1] Any of several arthropods erroneously supposed to kill live stock, in the southern United States, by stinging or by being swallowed; as:

[2] A whip scorpion. [Florida]

[3] A walking-stick insect. [Texas]

[4] A mantis.

[5] A wheel bug.

Synonyms: