9 letters · 15 points in Scrabble
verb make a buzzing sound
originFrom Medieval Latin bombināre (“buzz, hum”), variant of Latin bombilō, from Ancient Greek βομβυλιάζειν (bombuliázein), from βόμβος (bómbos, “booming, humming”), of imitative origin.
Etymology from Wiktionary, CC BY-SA 3.0