toadstone
/ˈtoʊdˌstoʊn/
noun
- A small stone or gem once believed to be found in the head of a toad and thought to have magical or medicinal properties.
- The old book described the toadstone as a cure for snakebites.
- She wore a toadstone necklace, hoping it would bring her good luck.
- In medieval times, people carried a toadstone as a charm against poison.
- A type of dark, fine-grained volcanic rock.
- The quarry yielded a large deposit of toadstone used in road construction.
- Geologists identified the black rock as toadstone from an ancient lava flow.
- The path was paved with toadstone, giving it a rough, dark surface.