speed

Sense 1 noun

distance travelled per unit time

Sense 2 verb

move fast

He rushed down the hall to receive his guests

Sense 3 noun

a rate (usually rapid) at which something happens

the project advanced with gratifying speed

Sense 4 verb

move faster

The car accelerated

Sense 5 noun

changing location rapidly

Sense 6 verb

move very fast

The runner zipped past us at breakneck speed

Sense 7 noun

the ratio of the focal length to the diameter of a (camera) lens system

Sense 8 verb

travel at an excessive or illegal velocity

I got a ticket for speeding

Sense 9 noun

a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression

Sense 10 verb

cause to move faster

He accelerated the car