I. drone 1 /drəʊn $ droʊn/ BrE AmE verb [intransitive]
to make a continuous low dull sound:
An airplane droned overhead.
drone on phrasal verb
to speak in a boring way, usually for a long time
drone on about
Tom was droning on about work.
II. drone 2 BrE AmE noun
[ Language: Old English ; Origin: dran 'male bee' ]
1 . [singular] a continuous low dull sound
drone of
the steady drone of traffic
2 . [countable] a male ↑ bee that does no work
3 . [countable] someone who has a good life but does not work to earn it or give anything back to society
4 . [countable] technical old-fashioned an aircraft that does not have a pilot, but is operated by radio