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WordNet-OnlineFree dictionary and thesaurus of English. Definitions, synonyms, antonyms and more...
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Noun speed has 5 senses
speed, velocity - distance travelled per unit time--1 is a kind of rate
 --1 has particulars:
speed, swiftness, fastness - a rate (usually rapid) at which something happens; "the project advanced with gratifying speed"--2 is a kind of pace, rate
 --2 has particulars:
speed, speeding, hurrying - changing location rapidly--3 is a kind of motion, movement, move
 --3 has particulars: acceleration, quickening, speedup; scud, scudding
 
focal ratio, f number, stop number, speed - the ratio of the focal length to the diameter of a (camera) lens system--4 is a kind of ratio
 
amphetamine, pep pill, upper, speed - a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression--5 is a kind of stimulant, stimulant drug; drug of abuse, street drug
 --5 has particulars:
 |  | amphetamine sulfate, amphetamine sulphate; Benzedrine, bennie; dextroamphetamine sulphate, Dexedrine; methamphetamine, methamphetamine hydrochloride, Methedrine, meth, deoxyephedrine, chalk, chicken feed, crank, glass, ice, shabu, trash | 
 
Verb speed has 5 senses
rush, hotfoot, hasten, hie, speed, race, pelt along, rush along, cannonball along, bucket along, belt along - step on it; "He rushed down the hall to receive his guests"; "The cars raced down the street"--1 is one way to travel, go, move, locomote
 Sample sentence:
 They speed up the hill
 
accelerate, speed up, speed, quicken - move faster; "The car accelerated"--2 is one way to intensify, deepen
 Sample sentence:
 These cars won't speed
 
speed - travel at an excessive or illegal velocity; "I got a ticket for speeding"--3 is one way to travel, go, move, locomote
 Sample sentence:
 These cars won't speed
 
travel rapidly, speed, hurry, zip - move very fast; "The runner zipped past us at breakneck speed"--4 is one way to travel, go, move, locomote
 Sample sentence:
 These cars won't speed
 
accelerate, speed, speed up - cause to move faster; "He accelerated the car"--5 is one way to modify, qualify
 Sample sentences:
 Somebody ----s something
 Somebody ----s somebody
 Something ----s somebody
 Something ----s something
 
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