[tum.ble.bug] n (1805): any of various scarabaeid beetles (esp. genera Scarabaeus, Canthon, Copris, or Phanaeus) that roll dung into small balls, bury them in the ground, and lay eggs in them
TUMBLEBUG
Meaning of TUMBLEBUG in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012