Noun:
1: speed, velocity distance travelled per unit time
2: swiftness, speed, fastness a rate (usually rapid) at which something happens; "the project advanced with gratifying speed"
3: speeding, hurrying, speed changing location rapidly
4: stop number, focal ratio, speed, f number the ratio of the focal length to the diameter of a (camera) lens system
5: upper, speed, pep pill, amphetamine a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression
Verb:
1: cannonball along, hie, race, hotfoot, hasten, belt along, pelt along, rush along, speed, bucket along, rush step on it; "He rushed down the hall to receive his guests"; "The cars raced down the street"
2: quicken, speed, speed up, accelerate move faster; "The car accelerated"
3: speed travel at an excessive or illegal velocity; "I got a ticket for speeding"
4: hurry, zip, speed, travel rapidly move very fast; "The runner zipped past us at breakneck speed"
5: accelerate, speed, speed up cause to move faster; "He accelerated the car"