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Dictionary definition for: Speed

1. (n) distance travelled per unit time

2. (v) step on it; "He rushed down the hall to receive his guests" "The cars raced down the street"

3. (n) a rate (usually rapid) at which something happens; "the project advanced with gratifying speed"

4. (v) move faster; "The car accelerated"

5. (n) changing location rapidly

6. (v) travel at an excessive or illegal velocity; "I got a ticket for speeding"

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

8. (v) move very fast; "The runner zipped past us at breakneck speed"

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

10. (v) cause to move faster; "He accelerated the car"

WordNet 2.1 Copyright Princeton University. All rights reserved.