Definition from Wiktionary, the free dictionary
From Medieval Latin bombināre, present active infinitive of bombinō (“buzz, hum”), variant of Latin bombilō, from Ancient Greek βομβυλιάζειν (bombuliázein), from βόμβος (bómbos, “booming, humming”), of imitatory origin.
- to buzz or hum
1973, HMS Surprise:
- So full a ship, so close-packed a world, moving urgently along, surrounded by its own vacuum; each man bombinating in his own, no doubt.