A named time span is a period of time that has been given a specific name, usually based on a significant event or person. The crossword solution for the term 'Named Time Span' is ERA, which is an abbreviation for 'Epochal Regulative Aeon'. An epochal regulative aeon is a period of time that is defined by a particular set of rules or regulations. It is often used to refer to a period of history or a specific ERA.