While "a blind knife" is not a common or widely recognized term to describe a dull knife, it can be used in a figurative sense to convey the idea that the knife is so dull that it cannot effectively cut anything. However, it's important to note that this term is not standard terminology and may not be universally understood by everyone. It would be more common to describe a dull knife as simply "dull" or "blunt." Using clearer and more widely recognized terms will ensure better communication when discussing the condition of a knife.