“Bombinate” is a verb meaning “buzz or hum,” but it’s mostly used in its adjective form, “bombinating,” as in, “The wasp’s nest gave off a bombinating alarm.” From medieval Latin, the word “bombinare” means “buzzing,” but the root can be traced back to the Latin “bombus,” meaning “humming.” You can also use the noun form, “bombination,” to describe a persistent buzzing sound.