- any of several dung beetles that roll balls of dung in which they deposit their eggs and in which the young develop.
Origin of tumblebug
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for tumblebug
Yet I'm always gay and snug, happy as a tumblebug, having still the best of times, grinding out my blame fool rhymes!Uncle Walt [Walt Mason]
It was only a tumblebug, but he shrank from putting foot on any living thing.Little Journeys to the Homes of the Great - Volume 14