grit lock Share definition Flag n: The solid,still edible mass formed when reconstituted grits have sat without stirring and, often, without heat. Dude, why'd you serve me grit lock? If you'd been on time, it'd be creamy and delicious. grit lock by Glenalogy March 20, 2014 0 0 Get merch Get the grit lock mug. Buy Now — $32.95 See more merch