Main Entry:

¹crys·tal

Pronunciation:

\ˈkris-t^əl\

Function:

noun

Etymology:

Middle English cristal, from Anglo-French, from Latin crystallum, from Greek krystallos — more at crust

Date:

13th century

1: quartz that is transparent or nearly so and that is either colorless or only slightly tinged2: something resembling crystal in transparency and colorlessness3: a body that is formed by the solidification of a chemical element, a compound, or a mixture and has a regularly repeating internal arrangement of its atoms and often external plane faces4: a clear colorless glass of superior quality ; also : objects or ware of such glass5: the glass or transparent plastic cover over a watch or clock dialect6: a crystalline material used in electronics as a frequency-determining element or for rectification7: ice 7 ; broadly : methamphetamine in any form when used illicitly