drone

US /dron/

UK /drəʊn/

B2TOEIC
n. (c.)Countable NounA remote controlled flying device
A drone can be used to explore areas that are too dangerous for people to go to
v.i.Intransitive VerbTo talk in a continually dull or monotonous voice
He likes to drone on about the evils of copying ideas
n. (u.)Uncountable NounA continually dull or monotonous voice
He spoke in a dull drone
n. (c.)Countable NounMale bee
He spoke in a dull drone
n. (c.)Countable NounA person who does dull, repetitive work.
He's just a drone, doing what he's told without thinking.
v.i.Intransitive VerbTo make a continuous low humming sound.
The refrigerator droned in the background.

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