1. small ridges or bumps on a surface, especially those made to provide a better grip

1. to make small ridges or bumps on a surface
Usage: technical

Examples

• The knurls on the metal handle prevented it from slipping.
• The machinist knurls the surface of the tool for better grip.
• Tiny knurls covered the edge of the coin.
• She knurls the clay pot’s rim with a special tool.
• The knurls on the screwdriver handle made it easier to turn.
• The craftsman carefully knurls the brass fitting.