silex /sīˈleks/

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

• hottering
• hotters
• hottest
• hot ticket
• hot tickets
• hottie
• hotties
• hotting
• hottings
• hottish
• hot to trot
• hot trod
• hot-trod
• hot-trods
• hot tub
• hot tubs
• hotty
• hot under the collar
• hot up
• hot wall
• hot walls
• hot war
• hot wars
• hot water
• hot-water bottle