crystal
noun
1.
a solid formed by the solidification of a chemical and having a highly regular atomic structure
2.
a crystalline element used as a component in various electronic devices
3.
a rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces
Derived from:
crystalize 4.
colorless glass made of almost pure silica
5.
glassware made of quartz
6.
a protective cover that protects the face of a watch