Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A revolution, as of a motor.
  • transitive v. To increase the speed of (a motor, for example): revved the engine.
  • transitive v. To accelerate or increase: orders to rev up factory output.
  • transitive v. To make livelier or more productive: revving ourselves up for the game; efforts to rev the economy.
  • intransitive v. To operate at an increased speed: heard the motors revving.
  • intransitive v. To accelerate in quantity or activity.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. revolution
  • abbr. reverend
  • v. To increase the speed of a motor, or to operate at a higher speed.

Etymologies

Abbreviation of revolution (Wiktionary)
Abbreviation of reverend (Wiktionary)
Abbreviation of revolutions, rpm (onomatopoeia) (Wiktionary)

Examples

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