1. a sharp-pointed instrument used for making holes or marks
2. a thorn or sharp spine on a plant

Examples

• She used a pricker to make holes in the leather.
• The cobbler reached for his pricker to punch new holes in the belt.
• Be careful of the prickers on that rose bush.
• The blackberry canes were covered with sharp prickers.
• He used a metal pricker to mark the pattern on the fabric.
• The prickers on the cactus made it difficult to handle.