(slang) Marijuana grown hydroponically.

(space science) Abbreviation of distant retrograde orbit. / Abbreviation of digital readout.

plural of DRO

A cattle drive or the herd being driven by it; thus, a number of cattle driven to market or new pastures.

simple past tense of drive

To herd cattle; particularly over a long distance. / (transitive) To finish (stone) with a drove chisel.

The single-humped camel (Camelus dromedarius). / Any swift riding camel.

A very small drop.

A male ant, bee or wasp, which does not work but can fertilize the queen bee. / (now rare) Someone who does not work; a lazy person, an idler. / One who performs menial or tedious work.

(transitive, colloquial) To kill with a missile fired by unmanned aircraft.