From Middle English drane, from Old English drān, from Proto-West Germanic *drānu, from Proto-Germanic *drēniz, *drēnuz, *drenô, from Proto-Indo-European *dʰrēn- ("bee, drone, hornet").
Cognate with:
Dutch drone ("male bee or wasp"),
Low German drone ("drone"),
German Drohne, dialectal German Dräne, Trehne, Trene,
Danish drone ("drone"),
Swedish drönje, drönare.
In sense “unmanned aircraft”, due to early military UAVs dumbly flying on preset paths. The verb sense derives from this sense.
From Middle English drounen ("to roar, bellow"), from Proto-West Germanic *drunnjan, from Proto-Germanic *drunjaną ("to drone, roar, make a sound"), from Proto-Indo-European *dʰer- ("to roar, hum, drone").