Longman Dictionary of Contemporary English homepage

Topic: MOTOR VEHICLES

overdrive

 noun
     
o‧ver‧drive [uncountable]
1TTC an additional gear which allows a car to go fast while its engine produces the least power necessary
2

go into overdrive/be in overdrive

to start being very active or working very hard:
Her career has gone into overdrive.
Definition of overdrive from the Longman Dictionary of Contemporary English within
the topic MOTOR VEHICLES
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