tum·ble·bug 
(tŭmbəl-bŭg′)
(tŭmbəl-bŭg′)n.
Any of various dung beetles that roll up balls of fresh dung, inside which the female deposits her eggs and on which the larvae feed.
- autogenesis
- autogenetic
- autogenetically
- autogenic
- autogenous
- autogenously
- autogeny
- autogiro
- autograft
- autograph
- autographic
- autographical
- autographically
- autography
- autogyro
- autogyro
- autoharp
- autohypnosis
- autohypnotic
- autoimmune
- autoimmunity
- autoimmunization
- autoinfection
- autoinoculable
- autoinoculation