Definitions

1. noun

a power-driven aircraft or other vehicle that flies without a human pilot, typically controlled remotely; a device that flies or hovers in the air, often used for surveillance, photography, or delivering goods.

“The company uses drones to inspect the construction site.”

2. verb

to produce a low, humming sound, often in the nose or throat; to speak in a low, monotonous voice

“The engine drone filled the entire garage.”