Modified acronym for "Working Mom" or "Working Mother."
Created in 2009 (see womobook.com), in response to popularity of SAHM (Stay At Home Mom). and because two working gals were tired of keying in w-o-r-k-i-n-g_m-o-t-h-e-r over and over.
See that girl running (in the rat race) with sensible heels, pushing an overpriced stroller? She's a WoMo.