Etimologia di Drone
drone (n.) 
O.E. dran, dræn ”male honeybee,” from P.Gmc. *dran- (cf. M.Du. drane; O.H.G. treno; Ger. Drohne, which is from M.L.G. drone), probably imitative; given a figurative sense of “idler, lazy worker” (male bees make no honey) 1520s. Meaning “pilotless aircraft” is from 1946. Meaning “deep, continuous humming sound” is early 16c., apparently imitative (cf. threnody). The verb in the sound sense is early 16c. Related: Droned;droning.
O.E. dran, dræn ”male honeybee,” from P.Gmc. *dran- (cf. M.Du. drane; O.H.G. treno; Ger. Drohne, which is from M.L.G. drone), probably imitative; given a figurative sense of “idler, lazy worker” (male bees make no honey) 1520s. Meaning “pilotless aircraft” is from 1946. Meaning “deep, continuous humming sound” is early 16c., apparently imitative (cf. threnody). The verb in the sound sense is early 16c. Related: Droned;droning.