A room in the home specifically for the woman of the house as a refuge to work, relax, or engage in other leisure activities away from the rest of the household without interruption; the lady version of a man cave
After a long day at work she retreated to her fox den for some quiet time before joining the family for dinner.
A hardo is a person who tries extremely hard at everything. Most times a hardo will try very hard at things that do not require excessive effort. For example, sports practices, gym class, etc.
Wow did you see Jack at practice today? What a hardo!