drone
drone
noun
A low, continuous, monotonous humming or buzzing sound.
"We heard the drone of distant traffic."
verb
To speak in a dull, monotonous tone, often boringly.
"The lecturer droned on for an hour."
verb
To make a low, continuous, monotonous humming or buzzing sound.
"The bees droned around the hive."
noun
An unmanned aircraft, often remotely controlled, used for various tasks.
"The police used a drone to survey the area."
Thesaurus
Synonyms: droning, monotone, pilotless aircraft, radio-controlled aircraft, poke, lagger, dawdler, trailer, laggard, drone on, drone pipe, bourdon