Definition of Bombinate. to make a buzzing or humming noise. Examples of Bombinate in a sentence. After the maid plugged in the vacuum cleaner, it began to bombinate loudly. 🔊. The bees are known to bombinate so noisily that not much can be heard over their incessant buzzing. 🔊

Bombinate sounds like it should be the province of bombastic blowhards who bound up and bombard you with droning blather at parties-and it is. The word derives from the Greek word bombos, a term that probably originated as an imitation of a deep, hollow sound (the kind we would likely refer to as "booming" nowadays).