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

Hypernym(s): bee

· an unchanging intonation

Synonym(s): monotone, droning

Hypernym(s): intonation, modulation, pitch_contour

· someone who takes more time than necessary; someone who lags behind

Synonym(s): dawdler, laggard, lagger, trailer, poke

Hypernym(s): idler, loafer, do-nothing, layabout, bum

· an aircraft without a pilot that is operated by remote control

Synonym(s): pilotless_aircraft, radio-controlled_aircraft

Hypernym(s): heavier-than-air_craft

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

Synonym(s): drone_pipe, bourdon

Hypernym(s): pipe

· make a monotonous low dull sound; "The harmonium was droning on"

Hypernym(s): sound, go

· talk in a monotonous voice

Synonym(s): drone_on

Hypernym(s): talk, speak, utter, mouth, verbalize, verbalise