knife (plural knife; from Old Norse knifr ‘knife, dirk’) is a tool or weapon with a cutting edge or blade, often attached to a handle or hilt. One of the earliest tools used by humanity, knife appeared at least 2.5 million years ago, as evidenced by the Oldowan tools. Originally made of wood, bone, and stone (such as flint and obsidian), over the centuries, in step with improvements in both metallurgy and manufacturing, knife blades have been made from copper, bronze, iron, steel, ceramic, and titanium. Most modern knife have either fixed or folding blades; blade patterns and styles vary by maker and country of origin.
this can serve various purposes. Hunters use a hunting knife, soldiers use the combat knife, scouts, campers, and hikers carry a pocket knife; there are kitchen knives for preparing foods (the chef’s knife, the paring knife, bread knife, cleaver), table knives (butter knife and steak knife), weapons (daggers or switchblades), knife for throwing or juggling, and knife for religious ceremony or display (the kirpa
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