changing location rapidly | a container made of glass for holding liquids while drinking |
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 mirror; usually a ladies' dressing mirror |
the ratio of the focal length to the diameter of a (camera) lens system | a small refracting telescope |
distance travelled per unit time | glassware collectively |
| the quantity a glass will hold |
| a brittle transparent solid with irregular atomic structure |