Session of Overindulgence is a term used to describe a period of time in which someone engages in excessive or unrestrained consumption of something, such as food, alcohol, or shopping. The term can also be used to describe a period of time in which someone engages in activities that are considered to be immoral or socially unacceptable. In this context, the crossword solution SPREE is an appropriate term to describe a Session of Overindulgence.