A knife is defined as a type of hand tool with a sharp edge that is used to cut something, whether it be food, rope, or even wood. It is usually composed of a blade, which is commonly around 12 inches or less in length, that is attached to a type of handle. They have been around for a very long time, dating back to the Stone Age where they were used as both tools and weapons.
The first knifes used in the Stone Age were made of either flint orflint or rock, their edge was c…