drone

nouns

stingless male bee in a colony of social bees (especially honeybees) whose sole function is to mate with the queen
drone
is a type of (narrower)
any of numerous hairy-bodied insects including social and solitary species
bee
an unchanging intonation
drone, droning, monotone
someone who takes more time than necessary; someone who lags behind
dawdler, drone, laggard, lagger, poke, trailer
an aircraft without a pilot that is operated by remote control
drone, pilotless aircraft, radio-controlled aircraft
a pipe of the bagpipe that is tuned to produce a single continuous tone
bourdon, drone, drone pipe

verbs

make a monotonous low dull sound
"The harmonium was droning on"
drone
is derived from
droning
is a type of (narrower)
make a certain noise or sound
"She went `Mmmmm'"; "The gun went `bang'"
go, sound
talk in a monotonous voice
drone, drone on
is derived from
droning