A rodding eye is a removable cover on the opening within a drain pipe that helps remove an obstruction by drain rods. It is also called a "cleaning eye" or "access eye." A rodding eye can also be defined as a pipe fitting that provides access for cleaning and inspection.
A rodding eye can also be defined an opening at the base of a chimney that helps with the removal of soot, dust and other debris. It can also mean an opening within concrete forms to help with the removal of debris that is closed prior to the concrete being placed. The use of a sealed rodding eye for tile or concrete floors is another example of application.