1. a rough or prickly seed case or flower head that clings to clothing or animal fur
2. a rough edge or ridge left on metal after cutting or drilling

1. to form a rough edge on metal

Examples

• The dog’s fur was covered with burs after running through the field.
• She carefully picked the burs off her wool sweater.
• The machinist filed away the bur from the drilled hole.
• Burs from the thistle plants stuck to my socks during the hike.
• The cutting tool will bur the metal if not used properly.
• He used sandpaper to smooth the bur on the pipe’s edge.