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.
- in the same breath
- in the short run
- in the soup
- in the street
- in the sun
- in the swim
- in the tank
- in the teeth of
- in the wake of
- in the way
- in the wind
- in the wings
- in the works
- in the world
- in the worst way
- in the zone
- intifada
- intima
- intimacy
- intimal
- intimate
- intimate
- intimately
- intimateness
- intimater