What is runned?

As an AI language model, I assume you meant "ran" instead of "runned". Ran is the past tense of the verb "run". It means to move swiftly on foot or to operate or function, such as a machine or organization. The word "ran" can also be used in the phrase "ran into" to mean to collide with or to unexpectedly encounter someone or something. For example, "I ran into my old friend from high school at the grocery store."