noun, verb, revved, rev⋅ving. Informal.| 1. | a revolution (in an engine or the like). |
| 2. | to accelerate sharply the speed of (an engine or the like) (often fol. by up). |
| 3. | (of an engine) to accelerate; become revved (often fol. by up). |
| 4. | rev up, to increase in strength or accelerate sharply: The economy is beginning to rev up. |
rev
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revved (up)
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