spiky

"The spiky hedgehog curled into a ball for protection."

"She wore a spiky necklace that stood out against her dress."

"The artist used spiky brush strokes to create a sense of movement in the painting."

"The spikies on the cactus can be quite dangerous."

"He accidentally stepped on a spiky that was left on the ground."

"The toy was covered with little spikies that made it difficult to hold."