He stopped his droning speeches and adopted a feisty, homey style answering questions on the tours.
Sort of a double life, like this Bob character you were droning on about earlier.
There was the chatter of a regiment of monkeys, the call of night birds innumerable, and the droning hum of the insects.
He pressed a button; a droning sort of hum came from the machine.
The droning voice of Uncle Eb and the feel of his hand upon my forehead called me back, blinking, once or twice, but not for long.
The sun was hot and the droning of the bees drowsy in its insistence.
It was like the sound of droning machinery, only very faint.
Mrs. Gilson was droning, "I do think Mattie Vincent is so nice."
By the winter of '49, the drowsy, droning Spanish town had expanded into a little excited city.
It came droning, droning up the forty-odd thousand miles from the planet.
Old English dran, dræn "male honeybee," from Proto-Germanic *dran- (cf. Middle Dutch drane; Old High German treno; German Drohne, which is from Middle Low German drone), probably imitative; given a figurative sense of "idler, lazy worker" (male bees make no honey) 1520s. Meaning "pilotless aircraft" is from 1946.
Drones, as the radio-controlled craft are called, have many potentialities, civilian and military. Some day huge mother ships may guide fleets of long-distance, cargo-carrying airplanes across continents and oceans. Long-range drones armed with atomic bombs could be flown by accompanying mother ships to their targets and in for perfect hits. ["Popular Science," November, 1946]Meaning "deep, continuous humming sound" is early 16c., apparently imitative (cf. threnody). The verb in the sound sense is early 16c.; it often is the characteristic sound of airplane engines. Related: Droned; droning.
In military usage, a pilotless aircraft used for reconnaissance and, more recently, for launching aerial attacks.