Spiny (adjective)

1. Having or covered with spines or thorns.
2. Resembling a spine or thorn in shape or texture.

Origin:

From spiny ("having spines"), from spine + -y.

Examples:

1. The spiny hedgehog rolled into a ball to protect itself.
2. The spiny leaves of the cactus were sharp to the touch.
3. The spiny fish had sharp fins that could cause injury.
4. The spiny shell of the sea urchin was hard and difficult to crack.
5. The spiny leaf was not good to eat, but it had medicinal properties.