Definition of "Drone" :

noun: stingless male bee in a colony of social bees (especially honeybees) whose sole function is to mate with the queen

noun: a pipe of the bagpipe that is tuned to produce a single continuous tone

noun: an aircraft without a pilot that is operated by remote control

noun: an unchanging intonation

noun: someone who takes more time than necessary; someone who lags behind

verb: talk in a monotonous voice

verb: make a monotonous low dull sound