Definition of wheel bug
: a large North American assassin bug (Arilus cristatus) that has a high serrated crest on its prothorax and preys on insects
First Known Use of wheel bug
Learn More about wheel bug
Britannica.com: Encyclopedia article about "wheel bug"
Seen and Heard
What made you want to look up wheel bug? Please tell us where you read or heard it (including the quote, if possible).