DRONE
make a continuous low humming sound
a continuous low humming sound
a continuous musical note of low pitch
a male bee in a colony of social bees, which does no work but can fertilize a queen.
a remote-controlled pilotless aircraft or small flying device
a continuous low humming sound
a continuous musical note of low pitch
a male bee in a colony of social bees, which does no work but can fertilize a queen.
a remote-controlled pilotless aircraft or small flying device