o·ver·drive 
(ōvər-drīv′)
(ōvər-drīv′)n.
1. 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.
2. Informal A state of heightened activity or concentration: shifted into overdrive toward the end of the semester.
tr.v. (ō′vər-drīv) o·ver·drove (-drōv), o·ver·driv·en (-drĭv′ən), o·ver·driv·ing, o·ver·drives
1. To drive (a vehicle) too far or too long.
2. To push (oneself) too far, as in the performance of tasks.
- Indo-European root: bheid-
- Indo-European root: bheidh-
- Indo-European root: bhel-
- Indo-European root: bhel-
- Indo-European root: bhel-
- Indo-European root: bhelgh-
- Indo-European root: bhendh-
- Indo-European root: bher-
- Indo-European root: bher-
- Indo-European root: bhergh-
- Indo-European root: bhergh-
- Indo-European root: bherəg-
- Indo-European root: bhes-
- Indo-European root: bheudh-
- Indo-European root: bheug-
- Indo-European root: bheuə-
- Indo-European root: bhleu-
- Indo-European root: bhlē-
- Indo-European root: bhoso-
- Indo-European root: bhreg-
- Indo-European root: bhreu-
- Indo-European root: bhrāter-
- Indo-European root: bhrū-
- Indo-European root: bhā-
- Indo-European root: bhā-