A dagger is a type of knife that has a sharp, pointed blade and is often used for thrusting. Unlike regular knives, daggers typically have a double-edged blade, which means they can cut on both sides. They are often associated with stealth and close combat, making them popular in historical battles and in stories about assassins or warriors. Daggers come in various styles and designs, often reflecting the culture they come from. Some famous examples include the Balisong from the Philippines and the Kris from Indonesia. Today, daggers are also collected as decorative items and can be found in many museums around the world.