The term WIPING CLEAN can be summarized as ERASING, which is a 7 letter word. Wiping clean is a process of removing something completely, such as dirt or a stain, from a surface. It is often done with a cloth or paper towel and a cleaning solution. Wiping clean is also used to describe the removal of data from a computer or other digital device. In this case, the data is erased completely, leaving no trace of its existence.