Signs for DRONE

Be sure to read the definitions for the signs in the videos.

Definition: a low continuous humming sound; buzz; hum.

Definition: an unmanned aircraft or ship that is guided or navigated remotely.

Note: it's an emerging sign. [Video contributed by David Perlman, 2017.]

Related signs: HELICOPTER, DRONE.

How about this ancient low-technology KITE? :)

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