![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Dewey_Wombat_hunting_knife.jpg/640px-Dewey_Wombat_hunting_knife.jpg&w=640&q=50)
Knife
tool with a cutting edge or blade / From Wikipedia, the free encyclopedia
A knife is a metal tool with a sharpened metal blade that is used to cut all sorts of things. The plural form of "knife" is "knives." Knives can serve various purposes. Hunters use a hunting knife, soldiers use the combat knife, scouts, campers, and hikers carry a pocketknife; there are kitchen knives for preparing foods, table knives, weapons, knives for throwing or juggling, and knives for religious ceremony or display.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Dewey_Wombat_hunting_knife.jpg/320px-Dewey_Wombat_hunting_knife.jpg)
Archaeologists have discovered sharp-edged tools as ancient as 2.6 million years old. Sharp stone tools became more advanced in design during the late Lithic periods, and a variety of techniques was used to produce such ‘knives’ in the Neolithic era. The copper and bronze ages followed, and of course brought tremendous changes to the ‘sharp-edge’ technology. These new metal tools were much more durable than stone ones, and hence mining and metal-processing became an important activity.[1]