The term dropping a knife is used to describe a very specific type of knife injury. This occurs when the blade of a knife slips out of the handle and falls to the ground, often injuring the person who was holding it. This can happen for a number of reasons, but is most commonly caused by poor quality knives or incorrect handling.
Dropping a knife can be extremely dangerous, as the blade can easily slice through skin or even bone if it hits in just the right spot. It's important to always be aware of where your knives are and to handle them with care, especially when they're sharp. If you do drop a knife, make sure to clean up any blood or other fluids immediately to avoid infection.