The mother-in-law you want to avoid like mononucleosis.
I really love the guy but I can't imagine spending holidays with the mono-mom.
by macyz.mom October 16, 2008
A woman who gives birth to just one baby at a time, as opposed to an octomom.
She's no attention whore like Nadya Suleman, she's a monomom.
by TaviRider December 12, 2009