A cannabis grinder is a tool used to break down dry cannabis flowers into smaller, more manageable pieces for consumption. It is typically made up of two interlocking halves with teeth or pegs on the inside that shred and grind the cannabis buds into smaller pieces when they are twisted together.
Grinding the cannabis helps to expose more surface area of the flower, making it easier to burn evenly and efficiently when smoking or vaporizing. It can also make it easier to extract the cannabinoids and other active compounds from the plant material for use in edibles, tinctures, and other products.