silex /sīˈleks/

1. Silica or quartz
2. A heat-resistant and shock-resistant glass formed of fused quartz

• wisdoms
• wisdom teeth
• wisdom tooth
• wise
• wiseacre
• wiseacres
• wise after the event
• wisecrack
• wisecracked
• wisecracker
• wisecrackers
• wisecracking
• wisecracks
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• wiseling
• wiselings
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• wise man
• wise men
• Wise Men
• Wise Men of the East