So how would define refurbished products?

This is what I think it means to me. They take the product which is a electronic and repair the none working items or replace a broken component back to working conditions. The companies then call it a refurbished product. They usually give it a warranty but not as long as a new warranty. I have purchased items that are are refurbished. I haven't had any problems with them at all. Have a good day and keep smiling.