M.I.L.F. Share definition Flag Any woman in her early 30s to late 40s. These women are in danger of being attacked by horny teenaged boys. "Hurhur, she's a MILF." "Get therapy, dude." M.I.L.F. by Anonymous January 30, 2003 0 0 Get merch Get the M.I.L.F. mug. Buy Now — $32.95 See more merch