OVERDRIVE
overdrive
(noun) a high gear used at high speeds to maintain the driving speed with less output power
overdrive
(noun) the state of high or excessive activity or productivity or concentration; “Troops are ready to go into overdrive as soon as the signal is given”; “Melissa’s brain was in overdrive”
overuse, overdrive
(verb) make use of too often or too extensively
overdrive
(verb) drive or work too hard; “The teacher is overworking his students”; “Overdriving people often suffer stress”
Source: WordNet® 3.1
Etymology 1
Verb
overdrive (third-person singular simple present overdrives, present participle overdriving, simple past overdrove, past participle overdriven)
(transitive) To drive too hard, or far, or beyond strength.
Etymology 2
Noun
overdrive (countable and uncountable, plural overdrives)
(dated) A gear, on an automobile, higher than the normal top gear.
A state of heightened activity.
Synonyms
(abbreviation)
• OD
• O/D
• O.D. / O. D.
Coordinate terms
• 4th gear (in an automatic transmission vehicle)
• 5th gear (in a manual transmission vehicle)
Source: Wiktionary
O`ver*drive", v. t. & i.
Definition: To drive too hard, or far, or beyond strength.
Source: Webster’s Unabridged Dictionary 1913 Edition