- a gear that at a certain speed automatically reduces an engine's power output without reducing its driving speed: used to lessen fuel consumption and engine wear
- Informal a state of intensified activity, productivity, etc.
See overdrive in American Heritage Dictionary 4
transitive verb (ōˌvər-drīvˈ) o·ver·drove (-drōvˈ)
- A gearing mechanism of a motor vehicle engine that reduces the power output required to maintain driving speed in a specific range by lowering the gear ratio.
- Informal A state of heightened activity or concentration: shifted into overdrive toward the end of the semester.
, o·ver·driv·en (-drĭvˌən)
- To drive (a vehicle) too far or too long.
- To push (oneself) too far, as in the performance of tasks.
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