speed
nounUK /spiːd/
US /spiːd/
How fast something moves or happens.
The cheetah ran at great speed across the field.
OTHER MEANINGS
2. The gear in a vehicle that controls how fast it goes.
He shifted into third speed to climb the hill.
3. To go very fast.
The car sped down the highway.
4. A drug that makes people feel very awake and energetic.
The police warned people about the dangers of speed.