changing location rapidly | the act of moving hurriedly and in a careless manner |
a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression | (American football) an attempt to advance the ball by running into the line |
a rate (usually rapid) at which something happens | a sudden forceful flow |
the ratio of the focal length to the diameter of a (camera) lens system | a sudden burst of activity |
distance travelled per unit time | the swift release of a store of affective force |
| grasslike plants growing in wet places and having cylindrical often hollow stems |