from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A part of a home specifically reserved for adult male activities, such as drinking beer, playing games and watching TV; often a garage or den.
man + cave; probably at least partially a pun on caveman. (Wiktionary)
My new listing has a man cave in the extra workshop/garage - complete with cable, lazy-boy chairs, and a wood stove.