Smother Share definition Flag A mother or overbearing girlfriend that smothers their adult child/ boyfriend with too much love, affection, bossy demands and food. She is such a 'smother'- her poor boyfriend has to wear whatever she tells him to. Smother by Deme May 9, 2008 0 0 Get merch Get the Smother mug. Buy Now — $32.95 See more merch