Smux Share definition Flag Smux is usually a word to describe a 'slut,' or a 'player.' The term means: -Man-Stealer -Whore etcetc. "WOAH! Did you see that smux? She totally gave him a BJ!""HEY! That smux dumped me for her!" Smux by smuxxybeast November 25, 2009 0 0 Get merch Get the Smux mug. Buy Now — $32.95 See more merch