1. An unchanging intonation
   "The professor's droning put half the class to sleep";
   - monotone, drone [informal]

1. [informal] Make a monotonous low dull sound
   "The harmonium was droning on"
    
2. [informal] Talk in a monotonous voice for a long time
   "The professor droned on about the history of ancient Rome";
   - drone on
    
3. Kill remotely using a military drone
   "The military droned several enemy targets"

Derived forms: dronings

Type of: cadence, go, intonation, modulation, mouth, pitch contour, sound, speak, talk, utter, verbalise [Brit], verbalize

Encyclopedia: Droning