crystal

definition: a protective cover that protects the face of a watch
example:
speech part: noun
synonyms: watch crystal watch glass
definition: glassware made of quartz
example:
speech part: noun
synonyms:
definition: a crystalline element used as a component in various electronic devices
example:
speech part: noun
synonyms:
definition: a rock formed by the solidification of a substance
example:
speech part: noun
synonyms: crystallization
definition: colorless glass made of almost pure silica
example:
speech part: noun
synonyms: quartz vitreous silica lechatelierite
definition: a solid formed by the solidification of a chemical and having a highly regular atomic structure
example:
speech part: noun
synonyms:

crystal is explained and pronounced

How crystal is being used?