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1.
The domain of a man or men. This could include but not limited to a man cave, living room, strip club, bar, saloon, and/or workplace. Any place that a man feels safe and free from the scorn of a woman.
Deborah, please remove yourself from my manvironment... your making me uneasy. I can't concentrate on my videogames while you're talking.

Gina, it should be illegal that I have to share an office with you. All of your personal and emotional issues that you bring to work is slowly eroding the atmosphere of my manvironment.
by NashGreen March 16, 2011