speed Meaning and Definition

1. n. changing location rapidly

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

3. n. a rate (usually rapid) at which something happens

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

5. n. distance travelled per unit time

6. v. move faster

7. v. cause to move faster

8. v. move very fast

9. v. travel at an excessive or illegal velocity

10. v. step on it