rev
rev /r'ev/ (revs revving revved)
1 [VERB] V, V n
When the engine of a vehicle revs, or when you rev it, the engine speed is increased as the accelerator is pressed.
The engine started, revved and the car jerked away down the hill...
The old bus was revving its engine, ready to start the journey back towards Madrid.
[PHRASAL VERB] V P n (not pron), V P
Rev up means the same as rev.
...drivers revving up their engines.
...the sound of a car revving up.
2 [N-PLURAL]
If you talk about the revs of an engine, you are referring to its speed, which is measured in revolutions per minute.
The engine delivers instant acceleration whatever the revs.rev coun|ter
[N-SING]
A rev counter is an instrument in a car or an aeroplane which shows the speed of the engine. (BRIT)
= tachometer
1 [VERB] V, V n
When the engine of a vehicle revs, or when you rev it, the engine speed is increased as the accelerator is pressed.
The engine started, revved and the car jerked away down the hill...
The old bus was revving its engine, ready to start the journey back towards Madrid.
[PHRASAL VERB] V P n (not pron), V P
Rev up means the same as rev.
...drivers revving up their engines.
...the sound of a car revving up.
2 [N-PLURAL]
If you talk about the revs of an engine, you are referring to its speed, which is measured in revolutions per minute.
The engine delivers instant acceleration whatever the revs.rev coun|ter
[N-SING]
A rev counter is an instrument in a car or an aeroplane which shows the speed of the engine. (BRIT)
= tachometer