Synonym: accelerate, amphetamine, belt along, bucket along, cannonball along, f number, fastness, focal ratio, hasten, hie, hotfoot, hurry, hurrying, pelt along, pep pill, quicken, race, rush, rush along, speed up, speeding, stop number, swiftness, travel rapidly, upper, velocity, zip. Similar words: speed up, at full speed, peer, peel, weed, need, exceed, feed on. Meaning: [spɪːd] 
n. 1. distance travelled per unit time 2. a rate (usually rapid) at which something happens 3. changing location rapidly 4. the ratio of the focal length to the diameter of a (camera) lens system 5. a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression. v. 1. step on it 2. move faster 3. travel at an excessive or illegal velocity 4. move very fast 5. cause to move faster.
n. 1. distance travelled per unit time 2. a rate (usually rapid) at which something happens 3. changing location rapidly 4. the ratio of the focal length to the diameter of a (camera) lens system 5. a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression. v. 1. step on it 2. move faster 3. travel at an excessive or illegal velocity 4. move very fast 5. cause to move faster. 
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241. The car has a top speed of 155 miles per hour.
242. He was running at full speed when a tendon snapped in his leg.
243. Work paid according to the amount done puts a premium on speed and not on quality.
244. From the point of view of safety, a lower speed limit would certainly be a good thing.
245. to beat time is to make a regular series of sounds at the same speed as a piece of music is intended to be played.Sentencedict.com
246. She attributes her record-breaking speed to the length of her stride.
247. The speed of economic change has been so great that the tax-collecting system has been unable to cope.
248. With this type of camera, the shutter speed is fixed.
249. It is vital to keep a check on your speed .
250. Once these difficulties were got over, the work would speed up.
251. The train was travelling at speed when the accident happened.
252. At that time, cities were growing at breakneck speed .
253. The car came round the bend at a terrifying speed.
254. The speed limit in many areas is a sedate 55 mph.
255. Imposing speed restrictions is easy, but forcing motorists to observe them is trickier.
256. Before we start the meeting I'm going to bring you up to speed with the latest developments.
257. A speed limit of 30 mph was introduced in built-up areas.
258. The Greek runner produced an electrifying burst of speed over the last 50 metres.
259. Reducing speed limits should lead to fewer deaths on the roads.
260. Mindful of the poor road conditions, she reduced her speed to 30 mph.
261. The amount of petrol a car uses is relative to its speed.