| DRO | swift-running bipedal dinosaurs |
|---|---|
| DRO | a genus of birds in the order Casuariiformes |
| DRO | large Australian flightless bird similar to the ostrich but smaller |
| DRO | one-humped camel of the hot deserts of North Africa and southwestern Asia |
| DRO | psychoactive substance present in marijuana |
| DRO | stingless male bee in a colony of social bees (especially honeybees) whose sole function is to mate with the queen |
| DRO | a pipe of the bagpipe that is tuned to produce a single continuous tone |
| DRO | an aircraft without a pilot that is operated by remote control |
| DRO | an unchanging intonation |
| DRO | someone who takes more time than necessary |
| DRO | talk in a monotonous voice |
| DRO | make a monotonous low dull sound |