The nouns original meaning is used in context with "social" insects, which are ordered into a hive structure. In an insect hive, drones are the workers - the ones gathering food, building the hive - in short: maintaining the hive, controlled by the queen, if not by some common instinctual fellowship and hierarchal order.
Where is that drone-brother of yours? Still hanging around the arcade?
Commonly found as a white powder/crystalline substance, it produces similar effects to Ecsasy or Cocaine when snorted/ingested. Gained an extremely large userbase in the United Kindom in 2009/10 due to it's legality, cheap price and relative purity.
2. I was droned out of my mind last night