1.stingless male bee in a colony of social bees (especially honeybees) whose sole function is to mate with the queen
2.an unchanging intonation
3.someone who takes more time than necessary; someone who lags behind
4.an aircraft without a pilot that is operated by remote control
5.a pipe of the bagpipe that is tuned to produce a single continuous tone
1.make a monotonous low dull sound;
The harmonium was droning on
2.talk in a monotonous voice