changing location rapidly | a hand tool consisting of a rotating shaft with parallel handle |
a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression | an amphetamine derivative (trade name Methedrine) used in the form of a crystalline hydrochloride; used as a stimulant to the nervous system and as an appetite suppressant |
a rate (usually rapid) at which something happens | a bad-tempered person |
the ratio of the focal length to the diameter of a (camera) lens system | a whimsically eccentric person |
distance travelled per unit time | |