The female version of mancave. Although the word itself implies motherhood, the woman doesn't necessarily have to be a mother.
Whipped Husband: What the hell happened to my mancave!?
Wife: It's now a momcave.
Whipped Husband: Yes, Dear.
Wife: It's now a momcave.
Whipped Husband: Yes, Dear.
by ThaBigCheesy October 14, 2010