cooledlavarock
nounUK /kuːld ˈlɑːvə rɒk/
US /kuːld ˈlɑːvə rɑːk/
Hard rock that forms when hot lava from a volcano cools down and becomes solid.
We found pieces of cooledlavarock on the beach near the volcano.
OTHER MEANINGS
2. A dark, heavy stone used for building and landscaping.
The garden path was made of cooledlavarock.
3. A material studied by scientists to learn about past volcanic eruptions.
Geologists collected cooledlavarock samples to date the eruption.
4. A rough, porous surface often used in decorative crafts.
She polished a piece of cooledlavarock into a small paperweight.