rock crystal 1
noundomain: substance
Princeton WordNet [ver.3.1]
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EnglishDefinition
a clear quartz used in making electronic and optical equipment
Hypernym
quartz 2
noun
a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities
EnglishHyponym
rhinestone 1
noun
an imitation diamond made from rock crystal or glass or paste
