redstone
nounUK /ˈrɛd.stəʊn/
US /ˈrɛd.stoʊn/
Redstone is a red rock in the game Minecraft that you can use to build machines and make things move.
He used redstone to make a door that opens by itself.
OTHER MEANINGS
2. A reddish type of stone or rock found in nature.
The path was paved with redstone from the nearby quarry.
3. A red-colored gemstone or ornamental stone.
She wore a necklace set with polished redstone.
4. A red building material made from clay or sandstone.
The old house was built from redstone bricks.