Milfbait Share definition Flag Adj. A male who seeks the affections of mature women exclusively (see MILF, Cougar). Syn. Cougarbait Joe won't date a woman under 40, he's hardcore Milfbait. Milfbait by JRSLim June 19, 2009 0 0 Get merch Get the Milfbait mug. Buy Now — $32.95 See more merch