Amethyst

Noun

 * 1) A transparent purple variety of quartz, used as a gemstone.
 * 2)  A purple colour.
 * 3)  The purple tincture when emblazoning the arms of the English nobility.
 * 1)  The purple tincture when emblazoning the arms of the English nobility.

Adjective

 * 1) Having a colour similar to that of the gemstone