drones
dro-nes
noun
Unmanned aerial vehicles, often used for surveillance, photography, or delivering packages.
"The police use drones for monitoring crowds."
verb
Makes a continuous low humming sound, or speaks in a monotonous, boring voice.
"The engine drones loudly on the motorway."
Thesaurus
Synonyms: drone, droning, monotone, pilotless aircraft, radio-controlled aircraft, poke, lagger, dawdler, trailer, laggard, drone on, drone pipe