low Share definition Flag The effect of anti-crack. The opposite of being high, a boring and blinding feeling. Mas: Dude, what's wrong with you? You're crashing into everything. Illa: Man...I'm so low..I can't find anything to do. low by MasillA September 10, 2009 0 0 Get merch Get the low mug. Buy Now — $32.95 See more merch